Herpetopoma pumilio, common name the diminutive top shell, is a species of small sea snail, a marine gastropod mollusc in the family Chilodontaidae.Marshall, B. (2013). Herpetopoma pumilio (Tate, 1893). Retrieved through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=718883 on 2013-04-14
Description The height of the shell reaches 3 mm, its diameter 3.25 mm.
(Original description) This species is closely related to Herpetopoma fenestratum (Tate, 1893). They differ, however, in having more rapidly increasing whorl(s; two stout lirae on the penultimate whorl and five on the body whorl; stouter and more widely spaced transverse riblets, which are, moreover, less oblique and more nearly axial in direction; and feebler nodosities on the lirae. The colour spots are usually confluent along the axial riblets.
Distribution This marine species is endemic to Australia and occurs off Western Australia.
References
Cotton, B. C. (1959). South Australian Mollusca. Archaeogastropoda. Handbook of the Flora and Fauna of South Australia Series. South Australian Branch of British Science Guild. W. L. Hawes, Government Printer, Adelaide. p. 1-448.
External links World Register of Marine Species