.DKYM^US, MEXICO AND CENTRAL AMERICA. 73 



ish streaks of the surface to be growth-periods. Columellar reflec- 

 tion, columella and umbilical chink as in dominicus. 



Alt. 14.2, diam. 8.4, length of aperture 5.3 mill.; whorls 5^. 



Alt. 13.6, diam. 8.3, length of aperture 4.8 mill.; 



Tehuantepec 



Biilimuhts albostriatus STREBEL, Beitr. Mex. Land- und Su'ssw.- 

 Conch. v, p. 94, pi. 6, f. 3 (1882). 



Based on tour similar specimens received from an English dealer 

 as an unknown species, among material from Tehauntepec, which in 

 all probability was collected by Dr. Sumichrast. Very likely a form 

 of dominicus. 



D. CHAMPIONI (von Martens). PI. 5, fig. 10. 



Shell perforate, ovate-conic, thin, closely and finely spirally stri- 

 ated, shining, diaphanous whitish. Spire conic, the apex rather ob- 

 tuse ; whorls 6^, slightly convex, regularly increasing, with the suture 

 white, the last whorl ventricose ; painted with a subsutural brown 

 band becoming obsolescent in front, and some sparse brown spots. 

 Aperture rhombic-oval, a little oblique ; peristome thin, a trifle ex- 

 panded, the columellar margin triangularly dilated, vertical, whitish. 



Alt. 27, diam. 14^, length of aperture 13, width 9 mill. (Mart.). 



W. Guatemala : Hacienda de Las Nubes, Cerro Zunil, Pacific 

 slope, in the vicinity of the coffee plantations, elevation about 5000 

 ft. (Champion.) 



Otostomus championi MARTENS, Biol. Centr. Amer., p. 222, pi. 14, 

 f. 5 (Sept., 1893). 



Described from a single specimen. 



D. EMEUS (Say). PI. 4, figs. 52-61. 



With crowded, minute, transverse striae. Inhabits Mexico. Shell 

 conic or elongate ovate, slightly angulated on the middle of the volu- 

 tions, and covered with minute, undulated, impressed, capillary lines; 

 whitish, with maculated bands; suture not deeply impressed ; aper- 

 ture shorter than the spire ; labrum exteriorly simple, interiorly with 

 a thickened submargin ; columella short, recurved ; umbilicus small, 

 but distinct ; spire with the angulation concealed by the suture ; body 

 whorl with the angulation almost obsolete. Length thirteen-twentieths 

 of an inch ; greatest breadth (parallel to the suture) three-tenths. 

 (Say.) 



