l** DR. P. P. CARPENTKR ON THE SHELLS OF PANAMA. 



203. Ci'i-ifliiiini paiipemihim is a good, new species of ChrijanlJuJn. 

 The Pr()t(.'><-()r probably ilid not recomiizi' the '.'lu'nmitzoul ajax nud 

 tiie Udostoinoid plait. Tiie toliovving altenitioiis niav be made in 

 the diai;iinsis: — Siiell pale oranjje [not lioni], with six [not five] 

 keels on tlie spire ; spiral riil^'ej anteriorly fainter [not obsolete] ; 

 apex sini-tial [not acute], of three Palndinoid whorls, the last large 

 in proportion; columella effnse [not canaliculated], with a long, 

 slender, slanting plait. 



204. Cerithiinn piilchnim=Centlnilea p. A distinct and trulv 

 beantit'ul s]ieeies, seldom obtained l)y collectors. 



20;j. Cerithium reevianum=^Cirithi<lea montaynei, M. 394. 



206. Cerithium raliihim = Cprithi(lea varicosa, 31. ^I)."). The 

 Southern sliells, in all their change-, present such a difliVrent asjiect 

 from tiie (iulf specimens, that lam incline? to regard the form Ma- 

 eatlanica as distinct, of which (>. ulhonodosa may prove a ' urietv. 



20". Triphoris alfernotiis, M. 391. 



205. Triphoris iiicoii.spii-itus is scarcely even a variety of the last ; 

 and does not differ so much as the specimens described under the 

 same name, M. 392. 



209. Trijihoris infrcqvens is not the shell descril)ed, under the 

 same name, M. 393, liut is tlie Ci-rifhiojisis tiiherriiloidps, M. 'uu. 

 It would have been strange if I had recognized the sliell from the 

 diagnosis ; f<ir both of the xpecimens are Hp.rtral. The apex is nearly 

 smooth. I forbear to redescribe nos. 3.92, 393 of the .Maz. Cat., 

 as they were separated principally in de'erence to Prof. Adams's 

 authority, until more numerous s|)ecimens should have beo" examined. 



210. Turrite//a bun/isii=T. yoniostoma, jun., M. 379. 



211. Ceecum diinimttum = Cfecum firwatirm, jun., with numerous 

 close rings. All the Prol'essor's specimens of this genus were dead ; 

 most of them pierced by Proboscidifers. They fully confirmed the 

 judgments I ventured to form of them in the Maz. C'at. and in the 

 ♦' Monogiaj)h of the Coecidue," P. Z. S. 1858, p. 413 e^ seq. 



212. Ceecum ehurTi>'nm = C. Jirmatum. The rings vary from 

 twenty-six to thiriy-threc. 



213. Ceecum firmattim, M. 308. Add to the diagnosis in Maz, 

 Cat. p. 320, last line, " oporculo vix concavo, suturis minus f/eji/iitis.'* 



214. Ceecum leeve. The two specimens are too worn for identifi- 

 cation, hut will pass sufficiently for the species described under the 

 game name, M. 372. 



215. Ceecum laqueatnm. A good species of the Elephantulum 

 group: V. Maz. Cat. p. 31"), and P. Z. S. loc. cit. p. 420. 



216. Ceecum monstrosum = C. Jirmatum in the adolescent stage, 



217. Ceecum parvum turns out, as was expected, to be = C undo- 

 turn, M, 371. The unique specimen is stunted and dead. 



21S. Cescum pygmeeum is a small but nearly adult C. Jirmatum. 



186 



