DR. P. P. CARPENTFR ON THE SHEM.S OF PANAMA. 21 



also contains a tray labelled " Pannnia : C. B. Ad. don.," in which 

 are Hippotiyx serratus, M. 346, //. hinljiitvs, and Gai/itiia /leutai/"- 

 niostoma, M. 270. This last name should he dropped, exetpt a> a 

 variety of G. stellata. Shy., which is the nortnal state : v. B. A. llep. 

 1857, pi. 7. f. 3, a~g. 



330. Cuhjptraa nherrans. The Professor candidly allows that 

 " in texture this shell much resembles a valve of an Anomia," which 

 it undoubtedly is, the supposed "probably imperfect cup" being 

 the lijraniental pit. The larjje muscular scar is very clearly de- 

 veloped ; but the others are faint, as is customary in young shells, 

 and might stand for either Anomia or Placunanomia. The valve is 

 thin and glossy inside. The outside is smooth, excepting the lines 

 of growth, and is encrusted with beautiful zoophytes. A tiny Ser- 

 pula, which has coiled itself close to the umbo, carries out the idea 

 of a Calyptrseid spiral apex ; but a careful microscopic examination 

 displayed the true Anomoid nucleus, at a little distance from the 

 margin, as is common in the Mazatlan specimens of A. latnpe, 

 M. 219. 



331. Cahjptreea (Si/pfiopatella) aspersa=^ C alerus conicus, very 

 worn and young, with the lamina broken away. One of the speci- 

 mens may perhaps be mamillaris. 



332. Calyptrcea cepacea=M. 345. 



333. Calyptrcea conica. These are dead specimens, of which a 

 few may be the true Ga/erus conicus, ^I. 332. But most of them 

 belong to the brown-tinted variety of (the Professor's G. re(/ulan«=) 

 mamiHaris : v. no. 340. 



334. Calyptrcea dentata= Crucibulum imbricatum, M. 343. 



335. Calyptrcea hispida= Crucibulum sjnnosum, M. 344. 



3>i6. Calyptrtea imbricata. The two specimens are too much 

 worn to affiliate with confidence, the cups being broken out. The 

 outside is ril)bed, v^ith arrow-headed striae between the ribs. They 

 probably = Crucibulum i., var. 



337. Calyptrcea macHlata= Crucibulum spinosvm, ^l. 344. See 

 the attempt to unravel the confusion in the synonymy of this family 

 in Maz. Cat. pp. 264-29.T. Three specimens marked by the Pro- 

 fessor " C. maculata, var.," are young, dead radiata, no. 339. 



338. Calyptrcea planulata. This unique shell is simply a young, 

 flat C. cepacea, with the cup prominent, and the outside sculpture 

 faintly developed, from living in a hollow place. The striae are not 

 "obsolete around the apex." 



339. Calyptrcea radiata-= Crucibulum r. This rare and beautiful 

 species is quite distinct, even in the early stages, from all varieties 

 of C. spinosum. 



340. CalyptrcBa {Syphopatella) reffularis=Galerua mamillaris, 

 M. 333. 



341. Calyptrcea umbrella= Crucibulum u. (=C. rudis, Bred.). 



195 



