168 A MANUAL OF AMERICAN LAND SHELLS. 



Patula Hempliilli, Newcomb. 

 Shell widely umbilicated, sublenticular, rough, with incremental 

 wrinkles and minute revolving strife, bearing separated, short, stout 

 bristles; dirty white, with a revolving reddish band; spire slightly 

 elevated, apex obtuse; whorls 4, the last strongly carinated and deeply 

 ym 151 excavated towards the suture, scarcelj^ descending; aper- 

 ture oblique, banded within ; peristome thin, acute, angular, 

 its terminations approached ; umbilicus very wide, show- 

 r. Hempkiiu. i^^g all the volutions. Greater diameter 12, lesser 10"^™; 

 height, 4""".. 



Helix JfiDijihilli, Newcomb, Ahj. Jonrii. Conch., v, 165, pi. xvii, fig. 4 (1869-70). 

 Pafiihi IlemphilU, W. G. Binxey, Terr. Moll., v, l.M). 



A species of the Central Province, having been found in the White 

 Pine mining district, Nevada; Maniton, Williams Cation, Colorado. 



Jaw thick, very much arched, of almost uniform breadth throughout, 

 striate tranversely and vertically ; ends not attenuated, squarely trun- 

 cated ; cutting edge with a blunt, |n'ominent, median projection. A 

 stout upper muscular attachment. 



Tins s])ecies (Terr. :\roll., V, Plate lY, Fig. J) has 20-1-20 teeth on 

 its lingual membrane, with 7 [)erfect laterals. The first laterals are 

 distinctly bicuspid. (See also Llahoensis.) 



The species is viviparous. Genitalia not otherwise observed. 



The specimen figured is typical. It rei)resents an immature specimen. 



I have retained a distinct specitic name for HempMUi on account of 

 the presence of side cusps and cutting jioints to the central and lateral 

 teeth on its lingual membrane : otherwise, the shell would be considered 

 a variety of .strh/osa. It certainly gradually runs into strigosa, forms 

 with revolving stria^ being identical Mith varieties of Haydeni and 

 called H. Brvneri, as proved to me by the type of that species kindly 

 loaned me by Mr. Aucey. 



PatuSa ]<lalioeiisi«<», Newcomb. 

 Fig. 158. Shell umbiiicatcd, globosely elevated, thick, white, rough, 



with srout, distant, oblique, curving, blunt ribs, of which 

 28 are upon the last whorl; suture impressed; spire highly 

 elevated, apex waxen, smootlier, obtuse; wliorls 5, convex, 

 the last equally globose'above and below, hardly falling be- 

 fore; umbilicus moderate, one-sixth the lesser diameter of 

 the shell ; ai)erturu oblicjne, almost circular; peristome sim- 

 J\ idahoei,Hii,. p],.^ made almost continuous by a heavy i^arietal callus con- 

 necting its approximating ends, that of the columella slightly expanded 



