CATALOGUE OF THE SHELLS OE FLORIDA — CALKINS. 251 



than append his "note." returned to me with the specimen: "This is 

 a new species, belonging to the Trignostoma group of CanccUaria. The 

 genus is very sparsely represented in the West Indies, none of those pre- 

 viously described approaching this. It is somewhat like C. Verremixii of 

 Kiener in general appearance, but differs in having a large umbilicus, 

 and from that and all other species of the genus in the nodules being 

 broken up irregularly over the surface, instead of being in the line of 

 longitudinal ribs. In fact, these nodules seem rather to develop from 

 revolving ribs." I do not know of another specimen ever having been 

 found. I take great pleasure in dedicating the species to the late la- 

 mented Dr. William Stimpson, who directed my first efforts in the study 

 of conchological science. 



PULMONATA. 



Family, Aukiculid^e. 

 Genus, AURICULA, Lam. 



288. A. PELLUCENS, Menke. This very interesting shell was collected 

 at Punta Rassa by Mr. Prime and Dr. Velie, and ai Cedar Keys by my- 

 self alive. It has a wide distribution, being quoted from Ceyloni 

 Demarara, and the Antilles, by Pfeiffer, Menkc, and others. It is the 

 only representative of the genus in the United States. Mr. Thomas 

 Bland first called attention to the species as existing in Florida in 1874 

 (Ann. Lye. Nat. Hist.), from specimens collected by Prime. It is cer- 

 tainly not abundant in Florida so far as research has extended. We may 

 account for its presence by the action of equatorial currents, as suggested 

 by Dr. Stimpson with regard to other species of tropical derivation found 

 in Florida. 



Genus, MELAMPUS. Montf. 



289. M. BiDENTATUS, Say. Abundant north and south to Texas. 



290. M. FLAVus, Gmelin. A West Indian species collected by Bart- 

 lett in Florida (Binney). I searched dilligently, but never found it. 



291. M. COFFEA, L. An abundant species. 



Genus, TRALIA, Gr. 



292. T. Floridana, Shutt. Collected on the Keys. 



293. T. PUSILLA, Gmelin. Collected by Bartlett (Binney). Found 

 also in the West Indies. This and the preceding species, if not acci- 

 dentally brought to Florida, are certainly rare. 



294. T. ciNGULATA, Pfr. I collected this on several of the Keys. 



Genus, PEDIPES, Adanson. 



295. P. NATicoiDES, Stearns. This tiny sliell, only eleven hundredths 

 of an inch in length, and tlie only species of the genus thiis far detected on 

 the eastern coast, was found by Mr. Stearns near Tampa, and described 

 by him in Vol. XIII, Proc. Bost. Soc. Nat. History. It frequents the 

 under side of " coon oysters." 



