HELIX. 55 



H. CJECOIDES, Tate. PL 9, fig. 22. 



Minutely perforated, a little shining, brownish corneous, with 

 equal distant lamella? ; whorls 4, convex, suture profound ; 

 aperture almost circular. Diam. 2 5 mill. 



Chontales Forest, Nicaragua. 

 H. CvECA, Guppy. PL 9, fig. 23. 



Scarcely perforate, obliquely costulate, brownish corneous, 

 apex smooth, suture deep; whorls 4, aperture obliquely sub- 

 circular, the extremities of the peristome joined by a diffused 

 columellar callus. Diam. 2 mill. 



Ins. Trinidad, West Indies. 

 H. IERENSIS, Guppy. PL 9, fig. 24. 



. Profoundly umbilicated, somewhat obliquely costulate, brown- 

 ish corneous, apex smooth, suture deep ; whorls 5, slightly 

 carinatcd. Diam. 3 mill. 



Ins. Trinidad, W. Indies. 

 H. BACTRTCOLA, Guppy. PL 9, fig. 25. 



Perspectively, widely umbilicated, closely radiate!} 7 costulate, 

 brownish corneous; whorls 7, narrow, slowly increasing, the 

 last with carinate periphery, apex smooth, shining. Diam. 4 mill. 



Ins. Trinidad , West Indies. 

 H. GRANUM, Strebel. PL 9, figs. 26-28. 



Narrowly perforate, thin, light horn-color, scarcely shining, 

 indistinctly costulate ; whorls 4, well rounded, with deep suture. 

 Diam. 28 mill. 



Mirador, Mexico. 



H. HARPULA, Reinhardt. (Unfigured.) Japan. 



Section ANGUISPIRA, Morse, 1864. 

 H. IDAHOENSIS, Newcomb. PL 10, figs. 29-31. 



Profoundly umbilicated, ashj^ corneous ; whorls 5, the two first 

 smooth or minutely obliquely striate., the others crossed by 

 strong, thin, sharp, white costs? , from 20 to 26 in the last whorl, 

 suture well impressed. Diam. 13-18 mill. 



Idaho. 



Varies considerably in its proportions, some specimens being 

 much flatter. Notwithstanding the fact that the sculpture in 



