HELICINA. 193 



SYNONYMS AND REFERENCES. 



Heltcina Hankyana Pfeiffee, in Proc. Zool. Soc. 1848, p. 122; Jlon. Pneum. 

 Viv. i. 376; ii. 203. 

 Chemnitz, ed. 2, p. 45, pi. ix. figs. 7, 8. 

 Gray et Pfeiffek, Brit. Mus. Phan. p. 302. 



Remarks. I have not seen this shell. The original 

 description is given above, and a fac-simile of the figures 

 from Chemnitz, ed. 2. 



HELICINA OCCULTA Say vol. ii. p. 356, pi. Ixxiv. figs. 1, 2. 



Ilelicina occulta Say (Binney's ed.) pp. 36, 37, pi. slvi. figs. 4-6. 



Chenu, Bibl. Concli. iii. p. 59, pi. xv. figs. 2 b, 2 c, 2 d. 



DeKay, N. Y. Moll. p. 82. 



Pfeiffer, Mon. Pnexim. Viv. i. 347; ii. 185. 



Chemnitz, ed. 2, p. 18, (1846), pi. iv. figs. 11, 12, (1850). 



Gray and Pfeiffer, Brit. Mus. Phan. p. 250. 

 Ilelicina r-ubella Green, 1. c. 



This is probably the species referred to in Kirtland's 

 Ohio Rep. p. 199 (1838). 



I am inclined to consider Hel. rubella Green as a syno- 

 nym of this species. From Sheboygan, Wise, I have 

 received an apparently recent specimen of it collected by 

 Mr. Lapham. Green's description is as follows : — 



Helicina rubella. Shell more than ^ inch broad, subglobose; 

 spire slightly elevated, conical ; whorls 5 or 6, with minute oblique 

 stria} ; sutures slightly impressed ; epidermis smooth and of a light 

 brick-red color ; aperture irregularly lunate, or semi-elliptical ; outer 

 lip white, callous, and partially reflected near the base ; operculum cor- 

 neous, smooth. Hills, western Pennsylvania. 



HELICINA ORBICULATA Say. . . .vol. ii. p. 352, pi. Ixxiii. Ixxiv. fig. 3. 



Helicina oi'biculata Say, (Binney's ed.) pp. 7, 36, pi. xlvi. figs. 1, 2. 



Chenu, Bibl. Conch. 3, p. 58, pi. xv. fig. 2, 2 a, 2 c. 

 DeKay, N. Y. Moll. p. 82. 



Chemnitz, ed. 2, p. 74, (1846), pi. x. figs. 32, 33. 

 Pfeiffer, Mon. Pneum. Viv. i. 375; ii. 199, (excl. E. ru- 



bella). 

 Gray and Pfeiffer, Brit. Mus. Phan. p. 272, not of Sow- 



ERBY. 

 JOURNAL B. S. N. H. 25 



