GUUE : NEW AND UNFIGURED SPECIES OF PLECTOPVLIS. Ill 



Pleetopylis (Endoplon) hirsuta, Mlldft". Figs. la— if. 



Pledopi/li.-i {Endoplon) hirsuta, Mlldff. : Nachrbl. Deutsch. Malak. 

 GeselL, 1901, p. 1 15. 



Shell dextral, discoid, deeply and widely umbilicated, dark corneous, 

 finely striated, decussated with rather indistinct, minute, spiral striae, 

 under a deciduous silky cuticle which is raised into close imbricating 

 lamellae, parallel with the lines of growth. Apex obtuse, suture im- 

 pressed. Whorls 7, a little convex above and at the side, obtusely 

 angulated above the ]-)eriphery and round the umbilicus, increasing 

 slowly and regularly ; the last a trifle dilated towards the mouth, 

 shortly descending in front. Aperture oblique, auriculate. Peristome 

 fuscous, thickened, and shortly reflected, the margins united by a 





jL^V' 



I 



d. e. f. 



Figs. la — iL—PhxtopyJis {Emlophn) hirsuta, Mlldff. 



Strong raised flexuous ridge, which gives off a longish entering, slightly 

 ascending fold on the parietal wall. Parietal armature composed of 

 two transverse plates, the posterior strongly raised, crescent-shaped, 

 the lower extremity deflexed posteriorly ; the anterior one shorter, 

 flexuous, giving off a strong ridge on each side at the lower extremity 

 and with a short, strong, free, horizontal fold above it. Palatal arma- 

 ture composed of five folds : the first horizontal, short but strong, with 

 a slight denticle anteriorly in a line with it ; the second longer, almost 

 horizontal, the posterior extremity slightly descending; the third longer 

 than the preceding, obliquely descending posteriorly; the fourth still 

 longer, also obliquely descending posteriorly; the fifth smaller, obliciuely 

 descending posteriorly, its lower extremity bifurcated, the upper arm 

 horizontal ; below the lower arm occurs a slight elongated denticle 



