Descriptions nr new ^PECIES and Varieties of Chitonid^ 



AND x4CM^lD.E, FROM THE PaNAMA COLLECTION OF THE 



LATE Prof. C. B. Adams. By Philip P. Carpenter, B.A., 

 Ph.D. 



Lepidopleurus adamsii. 



L. f. " L. dispari" simili ; pallide rufo-fusca, colore intensiore 

 irregidariter strigata sen maaidata ; scepiiis maculis albidis 

 regione diagonali ornata ; jugo vix acuto ; arris centralibus 

 et valvis terminalibus conspicue granulosis ; areis lateralibus 

 irregidariter verrucosis, verrucis plerumque lobatis ; mucrone 

 antico, vix conspicuo : intus, valvis centralibus uni-, termina- 

 libus vm.-x.-Jissis ; subgrundis parvis, dentibus acutis ; sutu- 

 ris medianis postice rectis, antice laminas haud attingentibus, 

 sinu planato, latissimo : limbo pallii imbricatim squamosa. 

 Long. -6, lat. -3 poll. ; div. 110°. 

 Variat verrucis minus expressis, simplicioribus. 

 = Chiton dispar, C. B. Ad. no. 373, par. 

 = Lop/igrus adamsii, P. Z. S., 18(53, p. 24. 



Unfortunately for those who do not like to remove the non-tes- 

 taceous portion from their Chitons, as they do from their other shells, 

 the mantle-margin by no means affords a safe clue to the structure 

 of the valves. Among the species of the genus Ischnochiton, Gray, 



2G5 



