14 HELIX. 



Yar. CRASSOCARINA, Mouss. 



With strong carinse at the periphery and surrounding the 

 umbilicus. 



Var. AMPHTCYRTA, Bourg. Figs. 58, 59. 



More flattened, compressed, last whorl not descending in 

 front, aperture more angular, subtetragonal, last whorl strongly 

 bicarinate, umbilicus widely conical. 



*** 

 Canary Islands Species, doubtfully referred here. 



H. ULTIMA, Mousson. PI. 2, figs. 60-62. 



Umbilicated perspectively, cretaceous, substriated, with more 

 or less oblique granulations, white, apex grayish corneous, 

 suture linear ; whorls 6, slightly convex, the upper ones crenately 

 carinatecl,the last not descending in front, more convex, obtusely 

 carinated or angulated on the periphery, narrowly rounded at 

 the umbilicus ; peristome straight, acute. Diam. 14 mill. 



Ins. Fuerteuentura, Canary Islands. 



H. PRESSA, Mousson. PL 2, figs. 63-65. 



More depressed than the preceding species, the granular striae 

 smaller, the umbilicus wider. Perhaps only a variety. 



Diam. 12 mill. 



Fuerteventura, Canary Islands. 



H. ACCOLA, Mousson. PL 2, figs. 66, 67. 



Umbilicated, cretaceous, striulate, with minute rugae or 

 granulations, white, suture subimpressed ; whorls 5^, a little 

 convex, the upper ones obtusely nodulously carinate, the last 

 not descending in front, periphery obtusely angulated or 

 carinated, somewhat flattened below, narrowly rounded at the 

 umbilicus. Diam. 9 mill. 



Fuertevsnturcti Canary Islands. 



H. HISPANICA, Westerlund (unfigured). Spain. 



Section MIMA, Westerlund, 1886. 

 H. BOISSIERI, Charpentier. PI. 2, figs. 68, 69. 



Covered perforate, thick, irregularly striated, a little shining, 

 cretaceous, white ; whorls 5, slightly convex, the last deflected 



