HELIX. 167 



H. POUCHET Ferussac, 1821. PL 49, figs. 53, 54; pi. 61, fig. 16; pi. 



52, figs. 69-71. 



Shell imperforate, depressed subglobose, not shining, rather strong 

 and solid, unicolored brown, or with faint dark bands, the first, 

 narrow, subsutural, second and third above the periphery, generally 

 confluent, fourth immediately below the periphery; spire low conic, 

 apex obtuse; sutures impressed; whorls 4, regularly increasing, 

 the last scarcely wider than the antepenultimate, but near the aper- 

 ture somewhat dilated, then strongly constricted and deeply deflexed; 

 first whorl not striate, very minutely granulate, nearly smooth; the 

 following more or less coarsely obliquely irregularly striate, the 

 striae and intervening spaces generally marked with extremely mi- 

 nute spiral impressed lines, and the whole surface irregularly gran- 

 ular, especially below; the body-whorl at its beginning is angular 

 and rather compressed; its last third is rounded, inflated, and. gib- 

 bous below; aperture very oblique, rounded trigonal, white within; 

 peristome reflexed, much thickened, its margins converging, the upper 

 angularly arched, outer margin bearing an obtuse small dentiform 

 callus, generally inconspicuous, upon its face, lower margin straight- 

 ened, with a rather heavy subtruncate callus within, forming an angle 

 at junction with outer lip. Diam. 23, alt. 14 mill. 



Ins. Teneriffe, Canaries. 



H. adansoni Webb et Berth, and H. poucheti Mabille are syn- 

 onyms. 

 H. DESCULPTA Mousson, 1872. 



Imperforate, conic or depressed-subglobose, with smooth (not in- 

 cised nor granulate) costulose strise, destitute of color or cuticle; 

 spire convex, wide-conic, aperture obtuse, suture impressed, simple; 

 whorls 5, slightly convex, the last not abruptly descending, a little 

 inflated and constricted, well rounded, not angulate, somewhat in- 

 flated below; aperture very oblique, small, coarctate, transversely 

 obtusely triangular; peristome thickened, broadly reflexed, margins 

 not approaching, joined by a callus, the basal subelongate, flatly 

 expanded and adnate at the insertion, joining the outer lip at an 

 angle. Diam. 21, alt. 16 mill. 



Ins. Fuertaventura, Canaries. 



A subfossil form, said to be intermediate between H. pouchet and 

 H. plicaria. 



H. MODESTA Ferussac, 1819. PL 50, figs. 62-64. 



Imperforate, solid, depressed, dark olivaceous or brown above, 

 shading into light yellow on the base, frequently with obscure ill- 



