HELIX-CARACOLUS. 125 



Var. semiaperta von Martens (pi. 56, figs. 3-5) seems to be a form 

 of this variety in which the umbilicus is wider than usual, approach- 

 ing in this respect H. transitoria Pfr. and H. bornii Pfr. The 

 characters are sufficiently shown by the figures. It is said to be from 

 Hayti. 



Var. GUTIERREZ: Poey. PI. 22, figs. 12-15. 



Imperforate or nearly covered perforate; base black, with a 

 narrow peripheral lighter zone and a small umbilical light tract ; 

 upper surface with a blackish band revolving in the center of each 

 whorl. Aperture as in H. marginella, but often not angular at 

 outer margin, and the lip generally brown. 



Eastern Cuba. 



Scarcely to be distinguished from var. marginella, but a little 

 differently colored. Specimens of a uniform yellow color are not 

 rare. 



Var. SCHWARTZIANA Pfr. PI. 22, figs. 16, 17. 



Imperforate, small, conoidal ; surface generally decussated ; color 

 deep brown or black except a narrow subsutural light line, a small 

 umbilical tract, and the white apical whorls. 



Alt. 18, diam. 27 mill. 



Jojo, S.-E. Cuba. 



Var. MINA Pfr. PL 22, figs. 20, 20a. 



Imperforate or umbilicate ; conoidal-depressed ; surface generally 

 decussated above especially the last whorl, which is somewhat dilated 

 and flattened behind the aperture ; color yellow, with a subsutural 

 brown zone, a blackish zone in the middle of the upper surface of the 

 whorls, and a similar one beneath the periphery ; the acute carina 

 is edged with a brown line. Peristome white. 



Alt. 16-18, diam. 36 mill. 



Eastern Cuba. 



Small examples are frequent ; they are often more depressed than 

 the types, the last whorl becomes rounded on its last third, and the 



