HELIX. 29 



striulate ; whorls 4, a little convex, regularly and rapidly increas- 

 ing. Diam. 2 mill. 



Algiers. 

 H. POUPILLIERI, Bourg. PI. 6, figs. 40-42. 



Deeply umbilicated, shining, subpellucid, corneous, becoming 

 orange-brown in the last whorl,- elegantly obliquely lamellarly 

 costate ; whorls 4-5, convex, rapidly increasing, with well im- 

 pressed suture, last whorl a little deflected downwards, rounded. 



Diam. 2 mill. 



Algiers. 

 H. PYGM^EA, Draparnaud. PI. 6, figs. 28-30. 



Yery minute, openly umbilicated, brownish corneous, slightly 

 shining, minutely striulate ; whorls 3^-4, regularly slowly in- 

 creasing, with well impressed suture, periphery rounded ; aper- 

 ture widely lunar. Diam. 1*75-2 mill. 



Europe, United States. 



The synonyms of this well-known species are H. minuta, 

 Studer ; H. Kirbii, Shepp. ; H. Taranti, Benzo ; ? H. De- 

 shayesii, Calcara (Sicily; perhaps a juvenile), and H. minutis- 

 ima, Lea, the type of Morse's genus Punctum, inhabiting the 

 northern portion of the United States. 



H. AUCAPITAINEANA, Bourg. PI. 6, figs. 34-36. 



Small, perviously umbilicated, corneous, translucent, obliquely 

 striulate, particularly above ; whorls 4^-5, scarcely convex 

 above, rapidly enlarging, with well-impressed suture, the last 

 whorl dilated, obsoletely angulated on the periphery, very slightly 

 descending at the aperture. Diam. 2 mill. 



Algiers. 

 H. SORORCULA, Benoit. PL 6, figs. 46, 47. 



Umbilicated, whitish fulvous, closely costulate, opaque ; whorls 

 4, slightly convex, the last a little descending in front, not 

 dilated ; aperture a little oblique, the margins approaching. 



Diam. 3'5 mill. Sicily. 



H. MASSOTI, Bourg. PI. 6. figs. 25-27. 



Widely umbilicated, almost flattened above, subpellucid, 

 slightly shining, light corneous, smooth, scarcely striulate ; 

 whorls 4^, convex, slowly regularly enlarging, with channeled 

 suture, the last slightly descending in front. Diam. 1-5 mill. 



Eoussillon and Catalonia. 



