2^ DR. P. P. CAUPENTER ON THE SHELI>S OF PANAMA. 



;'03. Nnftcrf, sp. iiid. c. The shell is marked y, and is prob.'ih'v 

 = N, haneti 



304. Nerita scahricnsta=^~^l. 32fi. After examining a midtitude 

 of specimens from different parts of the coast, I have not the slightest 

 doubt of the identity of the forms called ornata and desha>jcsii. 



305. Nerita, sp. ind. a^=N. bernhardi, M. 327. 



306. Neritina guaynquilensis. Stet. + iV. intermedia. Shy. 



307. Neritina picfa = M. 329. 



308-316. Stent. The shells described as "Auricula " belong to 

 Melainpus. 



317. Truncatella hairdiana. A good species. 



318. 11 Truncatella dubiosa. This belongs to Hydr obi a or some 

 similar Rissoid. 



319. Bulla (Toniati)ia) ivfrequens=Tornatina i., M. 222. 



320. Bulla {Cylichna) luticohi=Cylichna L, M. 221. The Ma- 

 zatlan shell is much more constricted than most of Prof. Adams's 

 specimens. 



321. Bulla ])uncfufafa = B. adamsi, ^L 224. The B. punctata, 

 A. Ad. = B. puncfu/ata, A. Ad., but is not the B. 2iunctulata, 

 C. B. Ad. = 7^. pu)icticulata, C. B. Ad., MS. on ticket. 



322. Bulla, sp. ind. = Tor7iatiua carinata, M. 223. 



323. Vermetus 1 glomeratus, C. B. Ad. (not Bivonia glomerata, 

 Lam.)= V. eburneus, M. 354. The shells sometimes assume a ru- 

 fous tint in the later whorls, in which state (if the Turritelloid apex 

 be concealed) it is liable to be confounded with Aletes ceutiquadrus. 

 Some of the Professor's shells belong to the latter species. 



324. Vermetus jJOiamensis, C. B. Ad. (1 B.ouss.^ = Aletes centi- 

 quadnis, M. 352. 



325. Sfomatella ivflata is a Lnmellaria with broken lip and very 

 much curved columella: v. M. 577- [A Sigaretus, with somewhat 

 sharper columella than the ordinary W. Indian form, was found 

 among the Professor's duplicate Panama shells ; but as it does not 

 occur either in the catalogue or the collection, it was probably dropped 

 in from the Jamaica series.] 



326. Ilipponyx, sp. ind. Of the Professor's "two small speci- 

 mens " marked " subrvfa, jun.," one is H. gray anus, jun., M. 350. 

 The other may be the same, but is probably the young of H. bar- 

 batus. Neither are sufficiently perfect to determine with contidence. 



327. Hipponyx Ibarbata. Part of these specimens belong to JT. 

 barbatus, M. 349; part to H. graya^ius; part are too much worn 

 to determine ; and one is a valve of Discina cumingii. 



328. Ilipponyx panamensis = H. antiquatus, M.347. The species 

 is very widely diffused, and varies greatly in each locality. 



329. Ilipponyx radiata=-H. grayamis, M. 350. The collection 



194 



