Cryptoconchus is a genus of chitons in the family Acanthochitonidae.
Species Cryptoconchus porosus - the butterfly chiton Cryptoconchus floridanus - the white-barred chiton
Extinct species The genus is also represented in the fossil record, in Pliocene and Pleistocene rocks.
References
Powell A W B, New Zealand Mollusca, William Collins Publishers Ltd, Auckland, New Zealand 1979