64 HELICEA. 



epidermis dark chestnut-color, with numerous minute curved hair- 

 like processes lying flat upon, and attached to the epidermidal sur- 

 face of the upper whorls in the direction of the incremental striae, 

 the epidermis at the base covered with acute, raised, transverse 

 tubercles, most numerous, and having erect bristles near the aper- 

 ture ; spire convex-conoid ; whorls five, flattened, gradually increas- 

 ing, the last gibbous above, suddenly but slightly deflected ; apex 

 minutely granulate ; base convex, little indented in the umbilical 

 region, and with impressed spiral lines beneath the epidermis ; 

 suture deeply impressed ; aperture oblique, transverse, auriform, 

 narrowed by a slender slightly arcuate lamelliform parietal tooth 

 extending across from the umbilical axis, and terminating with a 

 short angular deflection within the aperture ; upper margin of the 

 peristome acute, scarcely reflected, lower margin slightly arcuate, 

 depressed, slightly reflected, and partially appressed to the body 

 whorl, with a tooth-like callus within, having an almost obsolete 

 notch in the centre. 



Diam. maj. 9, rnin. 8, alt. 5 mill. 



Geographical Distribution. Mountains in Fayette, or Green 

 Briar Co., Virginia. (W. H. Edwards ?) 



Remarks. This species is allied to or rather intermediate be- 

 tween H. barbigera Redf. (Plate IX. figs. 4-7), and H. hirsuta Say 

 the former connecting H. spinosa Lea with H.fraterna Say. It 

 is smaller, more elevated, less acutely carinated, and readily dis- 

 tinguished from H. barbigera by the partially appressed, notched 

 peristome, and the different character of the epidermis. In H. bar- 

 bigera the attached hair-like epidermidal processes are produced, at 

 the sutures and carina, into cilia, which are entirely wanting in this 

 species. The same processes, though less numerous, and some- 

 times almost obsolete, are observable at the base of the former, 

 while in the latter, the basal epidermis approaches in character to 

 that of //. palliata Say. The deep characteristic notch in H. hir- 

 suta is considerably less developed in H. Edvardsi, and the callus 

 which connects the parietal tooth with the upper margin of the 

 peristome in the former, does not exist in the latter. In the gen- 

 eral character of the peristome the species under consideration re- 

 sembles H. hirsuta, while H. barbigera is in that particular more 

 appropriately compared with H.fraterna Say. 



