Descriptions nr vew jspeciks and Varieties op Chitonid^b 



AND ACM.EID.E, FROM TUE pANAMA COLLECTION OF THE 



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

 Ph.D. 



Lepidopleurijs adamsii. 



L. t. " L. dispari" simili ; pallide rufo-fusca, colore infensinre 

 irregulariter strigata sen macnJatu ; scepius maculis alhidis 

 reyione diagonali ornata ; jtigo vix acuto ; arris centralibus 

 et valvis terminaliljus conxpicne granulosis ; areis laterrr/ifjiis 

 irregulariter verrucosis, verrucis plerumque lohatis ; mucrone 

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

 libus viii.— x.-^«5/.<f ; subgrundis parvis, dentibus acvtis ; sutu- 

 ris mediants pnsfice rectis, nntire laminas haud attingenliius, 

 sinu planato, latissimo : limbo pallii imbricatim squamosa. 



Long. -6, lat. -3 poll. ; div. 110°. 



Variat verrucis tninus expressis, simplicioribus. 



= Chiton dispar, C. B. Ad. no. .'^"3, par. 



= Lop/igrus adamsii, P. Z. S., 18(i3, 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 Ischnochilun, Gray, 



265 



