144 HELIX. 



H. VULTUOSA, Gould. PI. 30, figs. 91-93. 



Rather solid, closely delicately striate, suture well impressed; 

 whorls 5?, convex, slowly increasing, the last subangular, deflected 

 at the aperture, well rounded below, with moderate umbilicus; 

 aperture lunate, its outline somewhat sinuous, parietal tooth broadly 

 lamelliform, oblique, joined to the lip below, lower lip tooth small, 

 upper one expanded and reflected ; dark horn color. 



Diam. 10 mill. 



Texas, Arkansas. 

 Var. HENRIETTA, Mazyck. Fig. 93. 



Aperture more triangular, peristome much thickened, but scarcely 

 reflected, the parietal wall with an obtuse denticle, and a long 

 lamelliform tooth, the internal teeth deep-seated, umbilicus wider, 

 surface with pits behind the aperture. 



Texas. 

 H. COPEI, Wetherby. PI. 30, figs. 2-4. 



Larger, and of lighter texture, with stronger growth-lines than If. 

 vultuosa, Gould. The lip is also more broadly reflected below, with 

 a sharper central angle, umbilicus wider, wall of aperture with an 

 acute carina, behind which is a double tooth, right margin with a 

 single small tooth, parietal wall with a curved lamella. 



Diam. 12 mill. 



Hardin Co. Texas. 



May be only a variety of H. vultuosa. 



H. CBAGINI, Call. PI. 30, figs. 100, 1. 



Narrowly umbilicated, shining, striate, smoother below, reddish 

 horn color, with yellowish blotches, marking the position of former 

 peristomes; whorls 5, convex, body whorl rapidly enlarging; aperture 

 with a short, strong, straight or scarcely curved parietal tooth, 

 peristome white, with a heavy callous deposit, a stout triangular 

 tooth on the right margin and a somewhat transverse tooth on the 

 basal margin, fulcrum-deposit some distance within the aperture. 



Diam. 8*5 mill. 



Neosho Co., Kansas. 



H. HOPETONENSIS, Shuttlew. PI. 30, figs. 94, 95. 



Thin, ribbed-striate ; whorls 5, somewhat convex, more convex 

 below, constricted behind the aperture ; aperture trilobate, parietal 

 tooth sharp, lip teeth small; narrowly umbilicated; light horn color. 



Diam. 13 mill. 



A coast species, So. Carolina to Florida. 



