192 PROCEEDINGS OF THE ACADEMY OP 



distinctive characteristics it is hirsute, as mentioned by Say. I am indebted to 

 Mr. James Postel, of St. Simon's Isle, Georgia, for some very fine fresli hirsute 

 specimens. From Mr. 0. S. Dorman of St. Augustine, Fa., I have some fine 

 specimens of auriculata, 16 mill, in the greatest diameter. 



Helix elevata. Say. Mr. Robert Kennicott collected in Wisconsin two 

 specimens of a curious variety of this species, furnished with a broad, revolving, 

 brownish band on the body whorl. 



Helix stexotrema, Ter. pi. xlii. f. 4, is a very well marked variety of hirsuta, 

 confined to the region of Tennessee. 



BuLiMUS dealbatus, Say, pi. li. However well defined may be the distinctive 

 characteristics of this species and B. schiedeanus,lactarius, &c., it is extremely 

 difficult to trace the dividing line between them, when seen in large quantities. 

 I have specimens picked from the same bush in Texas, some of which would be 

 referred to each of these species. At the same time it seems hardly possible 

 that the large, heavy shell figured on pi. li. b, should be the same species as the 

 small, fragile shell pi. li., fig. 1. At all events, it is necessary to distinguish 

 them by different names. 



AcHATiNA PELLUCiDA, Pf. pi. Hii. f. 2, is Blauueria (Voluta) heteroclita, Mont. 

 Dr. E. Foreman has specimens found in his garden at Washington, whither 

 they were brought on plants from Charleston, S. C, Mr. T. Bland found it in- 

 habiting brackish water in Jamaica. 



BoLiMus viRGULATUs, Binuey non Fer. pi. Iviii., (see remarks Vol. ii. p. 279.) 

 I'concur entirely with Dr. Gould in considering this shell identical with B. 

 muUilineatus, Say, which name has the priority of many years of Reeve's name 

 venosus. Ferussac's shell is quite distinct.. Mr. Say's description of H. muUili- 

 neatus, (Journ. Acad. N. S., Phila., Vol. 5, p. 120, anno 1825,) is as follows : 

 "Shell conic, not very obviously wrinkled; whorls not very convex, yellowish 

 white, Avith transverse, entire, reddish brown lines ; a blackish subsutural 

 revolving line ; apex blackish ; umbilicus small, surrounded by a broad blackish 

 line; columella whitish, labrum simple, blaciiish. Length less than T-lOth 

 inch, greatest breadth less than 7-20th inch. This species was found by Mr. 

 Titian Peale on the southern part of East Florida." 



Mr. Bartlett found the virgulatus, Binney, in the same locality. 



Glandina truncata, Binney non Gmel., pi. Ixi. f. 1, is G. corneola, nob. vid. 

 supra. Fig. 2 is G. Texasiana, Pf., Novitates Conch, p. 7, pi. xxii. f. 11, 12. 

 Figure 2, pi. Ixii. is G. parallela, nob. vid. supra. 



Helicixa ORBIC0LATA, Binucy non Say, PI. Ixxiii. last line, middle figure, is 

 Hel. tropica, Jahn. 



Helicina chrysocheila, Binney, pi. Ixxiv. f. 4. I have specimens of this shell 

 in my cabinet, and consider it distinct from Hel. Jamaicensis, Sowb., and all 

 other described species. I have a note taken by my father at the collection of 

 M. Petit de la Saussaye in Paris, in which he says that a similar shell is labelled 

 from Tampico. Compare Hel. iurbinata, Wiegm., Ch. ed. 2, pi. iv. f. 13, 14, 15. 



Notes on American Land-Shells, deposited by Mr. Say, and still preserved in 

 the collection of the Academy. 



Helix lucdbrata. Say. I have lately found among the shells of the Acade- 

 my three specimens of a shell labelled many years ago, " Jlelix lucubrala, Say — 

 Mexico." I have made a very critical comparison of them with authentic speci- 

 mens of II. caduca, Pf., received through the kindness of Mr. Cuming. I am now 

 confirmed in the opinion I expressed before, that the two shells are undoubt- 

 edly identical. The resemblance of these Mexican shells to II. fuliginosa, Binney, 

 is strong enough to have given Dr. Griffith the impression that they were the 



[Octoberj 



