116 PUPOIDES. 



and South Cat, of the Bimini group, on the extreme west of 

 the Bahamas, separated from Florida by the Gulf Stream. 



4. PUPOIDES HORDACEUS (Gabb). PL 12, figs. 11, 12. 



The shell is imperforate, shortly rimate ; eylindric, with a 

 convexly conic summit and obtuse apex; cinnamon to avel- 

 laneous, without gloss, the apex and lip pale. The upper 

 whorls are strongly convex, the last two weakly convex or 

 somewhat compressed laterally. Sculpture of slender retrac- 

 tive riblets, nearly straight, widely spaced, wanting on the 

 first iy 2 whorls, which are weakly, densely, microscopically 

 granulose. The aperture is slightly oblique, oval, angular 

 above. The peristome is narrowly expanded, strongly thick- 

 ened within. Parietal margin strongly oblique, covered with 

 a very thin callus. There is no angular tubercle or callus. 



Length 3.35, diam. 1.5 mm. ; 5% whorls. Jerome. 



Length 3.9, diam. 1.65 mm. ; 5% whorls. Jerome. 



Length 3.65, diam. 1.65 mm. ; 5% whorls. Adamana. 



Length 4.3, diam. 1.7 mm. ; 5% whorls. Adamana. 



Las Vegas, New Mexico, and western San Miguel Co., Colo- 

 rado, west to Mt. Trumbull and Jerome, Arizona, south to 

 Mesilla, N. M., and Benson, Arizona. 



Pupa hordacea GABB, Amer. Jour. Conch., ii, p. 331, pi. 21, 

 fig. 7 (1866). Not Pupa hordeacea W. G. Binney; not Bifi- 

 daria hordeacea Sterki. Pupoides hordaceus (Gabb), PILS- 

 BRY & VANATTA, Proc. A. N. S. Phila., 1900, p. 588, pi. 22, f. 

 11. WALKER, Occ. Papers Mus. Zool. Univ. Mich., no. 15, 

 1915, pp. 2-4 (distribution). 



Pupa arizonensis Gabb, W. G. BINNEY, Land and Fresh- 

 Water Shells of North America, 1869, part i, p. 240, fig. 416 ; 

 and in subsequent works. Not P. arizonensis Gabb. 



Pupa arizonensis W. G. Binney, STERKI, Nautilus, iii, pp. 

 118, 119. 



Pupa gabli BALL, Proc. U. S. Nat. Mus., vol. xix, 1896, p. 

 367, new name for P. arizonensis Binney not Gabb. 



Bifidaria hebes Ancey, PILSBRY, Classified Cat., p. 19 ; Nau- 

 tilus, xi, 1898, p. 117. Not of Ancey. 



Pupa gabli mexicanorum CKLL., Nautilus, x, April, 1897. 

 p. 143 (Rio Grande, Mesilla, N. M.). 



