BULIMUS. 125 



pale ; the posterior face of the reflected labrum is immaculate, 

 and its callus base is not angulated ; the aperture is much less 

 wide than that of lactea ; and in Mr. Hyde's specimen, a small 

 fissure remains near the umbilicus. It still more closely resem- 

 bles a variety of a shell which inhabits the Island of Candia, but 

 that species has always a white base, being immaculate beneath 

 the inferior band. Say, (1. c.) 



It seems probable that Helix irrorata is a variety of H. lactea 

 MiilL, with which I compared it when desci'ibing it. Say, 

 (Binney's ed.) p. 36. 



Helix irrwata Say, (Binney's ed.) p. 23. 



DeKay, N. Y. Moll. 45, (var. of lactea). 



Pfeiffer, Men. i. 272. 

 Helix lactea Muller, teste Binney, Pfeiffer, (iii.) Reeve, Say. 



Helix nemoralis Lin. teste Gray, Turtons, Man. 27, (" Canada and 

 United States.") 



Helix pellucida Fabricius, vid. Vitrina Angelicce. 



Helix pisana Miill. quoted from U. S. by Ferussac, (Tabl. Syst.) 

 and Gray (Turt. Man.) 



Helix subcylindrica Pulteney is a Truncatella. 



Helix TrumhuUi Linsley. (Shells of Connecticut, p. 10 ; Sill. 

 Journ. 48, p. 280). Spire much depressed or very Httle ele- 

 vated ; sutures slightly marked and umbilicus large and deep ; 

 color a dull white with a tinge of green ; shell thin and trans- 

 lucent; diameter about ^Vfy inch, height -^-^ inch ; found on the 

 shore of Long Island Sound near high-water-mark, and occa- 

 sionally near low-water-mark at Stonington, by Mr. J. II. 

 Trumbull. [May not this be Margarita arctica ? Eds.] 



" Helix Trumbulli is Skenca serpuloides." Gould, Silliman's 

 Journ. n. s. vi. 235. 



Helix virgata Mont. " United States," Ferussac, Tabl. Syst. 



Genus BULIMUS Scopoli. 



BULIMUS ZEBRA Muller vol. ii. p. 271, pi. liv.; pi. Ixxvii. fig. 13; 



pi. Ixxviii. fig. 12. 



For additional synonyms, &c. see Pfeiffer. 



On pi. 78, fig. 12, is a variety of this species from Key 



