B.emar'ks on Certain Species of iT". A. HelicidcB. 115 

 91. rotuiidata Ads. Rcc. Gen. 2, 448, 1858. 



Cyrena rotundata Lea. Trans. Amer. Phil. Soc. v. 107, pi. iT, 

 f. 51, 1832. 

 Hah. E. Indies. 

 Sa. Similis Pr. Ann. N. Y. Lye. Vol. VII. 1860. 



Hah. Nicobar. 

 33. sphaericula Pr. MSS. 1859. — Collect, auctoris. 



Cyrena violacea (var. Javanica), Mous. Moll. Java. 88, pi. XV. f. 1, 

 1849. - 

 Hah. Java. 



94. fenebrosa Ads. Rec. Gen. 2, 448, 1858. 



Cyrena tenebrosa Hinds. Ann. Mag. N. H. n. ser. X. 81, 1842. — 

 Voy. Sulph. 2, 66, pi. XXI. f. 7, 1844. 

 Hah. Fejee Islds. 



95. triquetra Desli. Proc. Zool. XXII. 13, 1854. 

 Hah. Phil. Islds. 



96. unioniformis Pr. Proc. Zool. XXVIII. i860. 

 Hah. ? 



97. violacea Ads. Rec Gen. 2, 448, 1858. 

 Cyclas violacea Lam. Ann. Mus. VII. 421, 1806. 



Cyclas violacea Lam. V. 553, 1818. — Lam. (Desli. edit.) VI. 1835. 

 — Delast. pi. VII. f. 5, 1841. 

 Hah. The East. 



XYII. — Renfiarks on Certain Species of North American 



Helicid^. 



By Thomas Bland. 



{Contiwued from p. 89.) 



Kead^March 5, 1860. 



Helix espiloca Ravenel. 



Plate IV. fig. 1-2. 



T. rimato-perforata, superne convexiuscula, subtus convexa, striata, 

 rufescente-coruea, tenui, pilis brevissimis obsita ; spira vix elevata ; anfr. 



