or , also known as the Letter of Pharasmanes to Hadrian,"Pseudo-Pharasmanes" may be used to indicate the inauthenticity of the attribution, as in . is a short Latin text in the form of an epistolary periplus describing the natural and human marvels encountered by the writer on journeys through Mesopotamia, Arabia and Egypt. It is a pseudepigraphal work attributed to King Pharasmanes II of Iberia and addressed to the Roman emperor Hadrian. It was written between the 2nd and 5th centuries AD.

may originally have been written in Greek, but no Greek fragment survives. There are ten surviving Latin manuscripts, plus four known lost manuscripts. In addition, it was translated into Old English before the year 1000. Two illuminated manuscripts of the English text survive. By around 1300 an Old French translation appeared. It is known from a single manuscript.

Although originated as a letter describing journeys (with distances between places), its complex transmission has resulted in numerous variations across manuscripts. The original of some passages cannot be accurately reconstructed. The nature of the subject matter—the marvellous and monstrous—confounds efforts to understand the text logically.

Synopsis The manuscripts do not agree exactly on the divisions of the text, having 36, 37 or 39 sections. The order of the sections is not consistent after section 25. The critical edition of Ann Knock has 36 sections in the following order.

The first section is the introduction. Pharasmanes is responding to the Emperor Hadrian's most recent letter, which had been delivered by Asacrates and Monacrates. He now sends information about "the races of men and the different types of places", gathered by himself and his family. The geography of the second section has been garbled in transmission. There is an island in the Euphrates with many sheep (possibly Haditha) at a distance of 100 stadia from a certain city. There is a wealthy trading colony with large sheep called Archemedon some 300 stadia from Babylon. In a place called Fenia or Philonia, live venomous hens. Between Babylonia and Mesopotamia, live beasts like monkeys with eight legs, eight eyes and two heads or horns. Some versions have four eyes, which suggests that conjoined twins may lie behind this account. The region of Pelusia lies 60 stadia from Babylonia. It is home to two-headed snakes. These are the amphisbaenae of Solinus. In the same region are horned onagers. The land of Arabia by the Red Sea is barren because of the horned vipers () that guard the pepper. To harvest the pepper, humans light fires to force the snakes underground, which turns the white pepper berries black. The distance from Babylonia to Persia is 300 stadia. The land is infertile and infested with snakes. In Seleucia live the fire-breathing Cynocephali, men with the heads of dogs. On a nearby island, the Ichthyophagi have knee-length beards and eat raw fish. On the same island, beyond the river Gargarus, live the Myrmidons, man-eating ants the size of small humans. They mine gold, which the local humans steal by means of a stratagem with camels. In all surviving versions, the explanation of the stratagem has become confused but involves female camels loaded with gold rushing across the river to their calves while the male camels are left to be eaten by the ants. The land between the rivers Brixo and Nile, called Mesopotamia in some versions, is inhabited by elephants. The same region is inhabited by multicoloured humans with inordinately long thighs. These transform themselves into storks, who "breed in the area known to the recipient of the Letter", a reference to the annual migration of storks from Africa to Europe. Also in the same region are hippopotamuses, gigantic horse-like animals with lion's feet. They sweat blood. East of the Brixo lives a race of black Anthropophagi called the Hostes. This section is only found in some manuscripts and is probably not original. Also near the Brixo live beasts called lertices with the ears of donkeys, wool of sheep and feet of birds. This section is only found in some manuscripts and is probably not original. On an island in the Brixo there are humans with their faces on their chests. On an island in the Brixo there are dragons (or snakes) 150 feet long and thick as columns. This section has been garbled in transmission. There is a high mountain (or kingdom) in Babylonia (or Armenia, or between Media and Armenia) inhabited by a race of tyrants. Towards the Red Sea lie the cities of Phenix and Ioraba, whose inhabitants dominate the sea and trade with India and Arabia. In the mountains near India there are bearded women who use leopards in lieu of dogs to hunt. In the forests in the mountains near India are another group of women twelve feet tall, having tusks like wild boars, ankle-length hair, tails like oxen and feathers like ostriches. Pharasmanes tried to capture some but they could not be captured alive. These women were later identified with the classical Lamiae. Nearby live a hospitable people and there are many kings by the ocean. Precious stones grow in a river in the land of the Ethiopians. A further 323 stadia away live the Homodubii (the classical onocentaurs). Some 280 stadia away along the ocean, the Soraci or Tritonides inhabit the region of Persia. They are seers. There is a land of evil barbarians with 110 kings. The lakes of the sun and moon are there. In the same place the trees that produce balsam grow. The Donestre, who are soothsayers and can speak all languages, live on an island in the Red Sea. They are cannibals who weep over their victims. This section is only found in some manuscripts and is probably not original. It seems to combine the legend of the crocotta with legends about crocodiles. To the east are the Enotokoitai, a large human race with gigantic ears that they use as mattress and blanket at night. On an island lie men whose eyes glow like lamps. This section is only found in some manuscripts and is probably not original. On an island in Persia is the place of the Sun, called Heliopolis, 200 stadia square, which has two large and splendid temples. The bed where the Sun sleeps at night is there. In Heliopolis, there is a golden vine that produces pearls. On the nearby adamantine mountain, there is a large bird called a Griffin with four feet and a head like an eagle's. The Phoenix (otherwise associated with the Heliopolis in Egypt) also lives there. Beyond Heliopolis are the volcanoes Olympus and Smaragdon and the boiling sea. Black people live there. Beyond them are the Gegotones with the horns and feet of goats. "Beyond that we have heard of nothing but darkness." In the valediction, Pharasmanes states how "these travellers' tales made me wish to see such things for myself", how people "were most anxious that I should put them in touch with Rome" and how he hopes "that you remember it with pleasure for many years."

Several manuscripts contain additional chapters not found in the original, drawn from Isidore of Seville's EtymologiesThose from manuscript L are printed in . and from other sources., cites one from those in the Bodleian manuscript printed and translated by . included these, but excluded them from his revised edition. See .

Authorship and language purports to be a letter from a king named Pharasmanes to a Roman emperor. In some versions the emperor is Trajan () and in others Hadrian (). The latter is probably original, with Trajan being a corruption. The Pharasmanes in question is King Pharasmanes II of Iberia (), who is known for his rift with Hadrian, as recorded in the Historia Augusta.

Given Hadrian's interest in the marvellous, "a letter from Pharasmanes to Hadrian dealing with the monstrous and the marvellous is ... not at variance with such historical knowledge as we have of the personages named." In arguing for authenticity, some authors have pointed to Hadrian's known interest in the bizarre. His freedman Phlegon of Tralles was a leading writer in this vein.

If the letter is authentic, it must have been written in Greek. Although it is almost certainly not authentic, there are other indications that the original text was Greek, including the use of the stadion unit for distance and some mythological references without parallel in Latin writings (for example, a description of the Palace of the Sun, which is conflated with Heliopolis in Egypt). Even if the original was not Greek, the letter is "couched in terms intended to give it the appearance of a translation from Greek".

Date In favour of an early date, it has been argued that a false letter on the strange and marvellous in an elevated tone—an example of adoxography—fits perfectly into the period of the Second Sophistic (2nd and 3rd centuries). Ann Knock concludes that the was written in Greek "not long after the reigns of Trajan, Hadrian and Pharasmanes—probably towards the end of the second century." Álvaro Ibáñez Chacón dates it later, to the 4th–5th centuries, arguing that it was inspired by the description of Hadrian and Pharasmanes in the Historia Augusta and by the Historias own tendency to literary invention.

The terminus ante quem (latest possible date) for the existence of is the appearance of the names of two rivers, Brixo and Gargarus, in the Catholica Probi and the Appendix Probi. These Latin texts were written in the 4th century, but the earliest surviving manuscripts date to the 7th century. The river names are otherwise known only from . This indicates that the Latin text existed by the 7th century at the latest. All existing Latin versions derive from a single Latin version, either translation or original. If Isidore, who died in 636, knew the text, the terminus ante quem is the same.

Textual history Latin manuscripts No surviving manuscript copy of has a title. The title was coined by Oswald Cockayne for his 1881 edition.

There are four versions of the text grouped into two redactions. The two redaction existed no later than the early 9th century and possibly a century earlier, depending on the date of the Liber monstrorum, which draws on redaction II. Ann Elizabeth Knock calls the two redactions the F-Group and P-Group, depending on whether the name of the letter's sender begins with a P (e.g., Premonis) or an F (e.g., Fermes). They are also known as redactions I and II, respectively, although the second redaction is not descended from the first. The four versions are known as A, B, C and D, based on the letters assigned to their type manuscripts by Henry Omont in 1913.For a table showing the various sigla used by authors, see .

F-Group or redaction I consists of versions A and C in the following manuscripts:

A – Paris, Bibliothèque nationale de France, NAL 1065, copied in the decades around 900 A1 – Cassino, Biblioteca dell'Abbazia di Montecassino, MS 391, copied in the 11th century in Beneventan script A2 – Cava de' Tirreni, Biblioteca dell'Abbazia Benedettina della SS. Trinità, Cod. 3, copied in the 11th century in Beneventan script A3 – Madrid, Biblioteca Nacional de España, MS 19, copied in the 12th century A4 – Paris, Bibliothèque nationale de France, Latin 7418, copied in the decades around 1300 C – version found incorporated into Gervase of Tilbury's Otia Imperialia, known from 28 manuscriptsListed in .

A1, A2, A3 and A4 are later than A and of the same family but are not directly descended from A. A2, A3 and A4 all contain the same florilegium of texts and probably originated in southern Italy. They do not contain the complete text of De rebus.

P-Group or redaction II consists of versions B and D in the following manuscripts:

B – version copied by Eberhard Gottlieb Graff (1827) from the now lost manuscript Strasbourg, Cod. C IV.15, a victim of the siege of Strasbourg; possibly of the 8th or 9th century D – London, British Library, Cotton Tiberius B.V, part 1, copied in the 11th century Related to D are: