34 THE NAUTILUS. 
dred species, but one sinistral individual was found, of the species 
A. conica Wood. It is a clearly defined Ampudllaria, and could not 
be confounded with the genus Lanistes—Jennie E. Letson. 
Hevicina RaBet, n.sp. Shell lenticular, acutely carinated low- 
conic above; yellowish- or fleshy-white or red variously banded and 
figured ; surface finely sulcate spirally. Whorls 32, flat above, the 
last convex below the acute peripheral keel. Aperture subtriangu- 
lar, oblique, dark red: within, at least in part; peristome well ex- 
panded, white; axial callous heavy, rugose, varying from dark 
reddish-brown to translucent whiteinecolor. Alt. 6°3, greatest diam. 
11, lesser 8°7 mm. Another specimen measures, alt. 5°2, diameters 
9and 75 mm. Pelew Is. (Dr. Rabe). This acutely keeled and 
spirally lirate species is remarkably variable in coloration. Types, 
no. 68,854 coll. A. N.S. P., presented by Mr. John Ford. —H. A. 
Pilsbry. 
RECENT PUBLICATIONS RECEIVED. 
’ Professor Wm. H. Dall’s Report on the Mollusks collected by the 
International Boundary Commission of the United States and Mex- 
ico, 1892-1894 (Proc. U. S. Nat. Mus., 1896, issued in 1897), is one 
of the most important documents yet published upon the inland 
mollusk fauna of the southwest. It treats of a region rarely visited 
by snail collectors, and consequently but little known, and places 
the conchology of the region on a solid basis. The region north of 
Mexico, between the Rio Grande and the Colorado, seems to be a 
prolongation northward of the fauna of the mountains of northern 
Mexico, rather than a southern extension of that of the Great Basin 
west of the Rocky Mountains. It presents features due to contri- 
butions from the Californian and Mexican regions, the latter pre- 
dominating, with afew stragglers from the north. The plains are 
almost uniformly arid and frequently alkaline, and nearly all the 
Pulmonates were collected at the upper levels of the various mount- 
ain ranges near the boundary. Epiphragmophora extends into the 
region, being represented in Arizona and New Mexico by four spe- 
cies, of which two, arizonensis and hachitana are new. The Poly- 
gyra levettei groups proves to be prolific in species, five, of which 
four are described by Dall, being found. The classification of Holo- 
spira proposed in the last volume of THe Naurruus is fully set forth 
