CENTRAL PROVINCE SPECIES. I(j9 



aud reflected over a portiou of tlie umbilicus. Greater diameter 13, 



lesser 11"""; height, T"^"'. 



Helix Idolioeiiisis, Newcomb, Am. Joiirn. Conch., ii, 1, pi. i, figs. 1-3 (1866). — W. G. 



BixNEY, L. &. Fr.-W. Sh., i,79, fig. 138 (1869). 

 Anguixpira Idahoensis Tryon, Am. Journ. Conch., ii, 260 (1866). 

 Patula Jdahooisis, W. G. Binnky, Terr. Moll., v, 160. 



Idaho Territory, between Idaho City aud Cceur d'Aleue miniug dis- 

 trict, in the Central Province. 



The shell figured was received irom Dr. Newcomb. The species in 

 texture aud form resembles somewhat a small, elevated Gooperi. 



The jaw very much resembles in form and in its crenelated cutting 

 edge that of Patula striafella. Its anterior surface has coarse perpen- 

 dicular stria?, or obsolete wrinkles, not well-formed ribs. There is a 

 stout membranous attachment to the upper margin. 



P. Idahoensis (Terr. Moll., Plate IV, Fig. 1) has 33-1-33 teeth on 

 its lingual membrane, with 11 perfect laterals. The transition from 

 the laterals to the marginals, however, is very gradual. This species 

 and HemphUli have side cusps and cutting points on the central and 

 lirst laterals, while strigosa does not. 



Genitalia not examined. 



Patula Iforni, Gabb. 



Shell umbilicated, globosely depressed, thin, coarse, reddish horn- 

 color, under the epidermis obliquely striate, hirsute; whorls 4, fig. :5o. 

 scarcely convex, the last inflated below ; umbilicus pervious, 

 showing the whorls to the apex ; aperture oblique, subcircu- 

 lar; peristome simple, acute, its ends hardly approaching, that 

 of the columella uot widened nor reflected. Greater diameter 

 4, lesser 3^'""' ; height, 1"'"'. p. Hom;. 



Helix Honiii, Gabb, Am. Jomii. Conch., ii, .330, pi. xxi, fig. 5 (1866). — W. G. Bin- 



NEY^ L. & Fr.-W. Sh., i, 81, lig 143(1869). 

 Hyaliiia Hornii, Tryon, Am. Jonri-. Conch., iii, 163 (1867). 

 Patula Horni, W. G. Bi.xney, Terr. Moll., v, 167. 



Fort Grant, Ariz., at the junction of the Arivapa and San Pedro 

 Eivers, in the Central Province. 



My description and figure are drawn from an autheutic specimen. 

 The latter does not show the hirsute character of the species. In Dr. 

 Gabb's original figure there are^ at right angles with the periphery, a 

 row of erect hairs. 



Animal uot examined. 



