62 THE NAUTILUS. 
The species is near E. Boucardii Sallé from Cordova, but differs 
by smaller size, darker color, less sharp sculpture and the presence 
of spiral lines. 
From San Sebastian, Jalisco, Mex., E. W. Nelson. 
Coelocentrum astrophorea n. sp. 
Shell pale yellow brown, decollate, with 15 remaining whorls, the 
first six of which taper, while the rest are subequal; suture distinct 
minutely channelled, or with a sharp edged thread on each side of 
it, surface polished with concavely flexuous small ribs with wider 
interspaces, on which is visible obscure spiral striation; last whorl 
keeled below, projecting, aperture rounded triangular, slightly re- 
flected, simple; axis large, pervious except at the base; within the 
whorl with a medial keel on each side of which it is excavated and 
vertically ribbed, while from the junction of keel and ribs small 
spines like the rays of a star project into the lumen of the whorl. 
Alt. 30, max. diam. 7, aperture 4°77 mm. 
From Encarnacion, Hidalgo, Mex., E. W. Nelson. 
Though the spines are obviously merely an evolution from the 
usual nodes, they are remarkable and hitherto unrecorded in any 
species. 
Schazicheila hidalgoana n. sp. 
Shell trochoid depressed with a rather pointed spire and nearly 
five whorls; white with extremely fine close-set rounded riblets in 
harmony with the lines of growth; nucleus rounded, smooth ; suture 
very distinct, slope of the spire flattened a little, periphery obscurely 
keeled; aperture rounded-triangular, outer lip reflected with a 
shallow sinus at its posterior extremity, rounded below with a thick 
body callus (on which is a keel for the edge of the operculum) 
uniting the lips; umbilicus covered by a thin callus, base moder- 
ately rounded ; operculum (lost)? Alt. 85, mag. diam. 12, min, 
diam. 9°5, aperture 6 mm. 
Found at Encarnacion, Hidalgo, Mex., by Nelson. 
This species is obviously distinct from any of those heretofore 
described in this very limited genus. 
ON TWO NEW SPECIES OF AMPHIDROMUS. 
BY C. F. ANCEY. 
Amphidromus Fultoni Anc. 
Shell sinistral, short, ovate-conic, minutely perforate, thin, ob- 
liquely striate, subangulate at the periphery, chiefly at the begin- 
