﻿dm. i I SHELLS COLLECTED IN THE BAHAMAS 437 



pletely over the Bahamas having been reported from nearly all the 

 localities where collections have been made. Riding Point, Grand 

 Bahama and Moraine Cay are localities not previously noted. 

 Microceramns gossei Pfr. var. providentia Pilsbry. 



Mangrove Cay, south bight of Andros; Nassau; and Little Abaco, 

 near Nield's place. 



The allied M. swiftii does not seem to turn up from the western 

 Bahamas. 

 Bulimulus sepulchralis Poey. 



Common at Nassau, where it may very likely have been introduced 

 from Cuba. It affects the neighborhood of drains, etc. 

 Bulimulus bahamensis Pfeiffer. 



Man-rove Cay, Andros; and Nassau on the Grantstown road; 

 widely spread through the Bahamas but seemingly not common any- 

 where. J 

 Urocoptis bahamensis Pfr.. var. providentia Pilsbry. 



Mangrove Cay, Andros: Nassau, near Johnson's place; and on 

 rocks near the entrance to the cave on the Gladstone place. 

 Cerion ritchici Maynard. 

 Mangrove Cay, Andros. 



Two very poor specimens which appeared to be this species were 

 taken with hermit crabs. 

 Cerion glans Krister, var. coryi, mut. agava Maynard. 



From sisal growth near Fort Charlotte, Nassau. 

 Cerion glans Kuster, var. griseum Maynard. 



Mangrove Cay, Andros Island. 

 Cerion glans Kuster, var. bimarginatum Maynard. 



Galden and Mangrove Cays near the south bight of Andros, a 

 few defective specimens. 

 Cerion glans obesum Dall, now PI. lviii, fig. 15. 



This form was obtained from Long Cay, north bight of Andros 

 by the late Prof. John J. Northrop : and from Mangrove Cay, south 

 bight, by Mr. Owen Bryant. While varying somewhat in height 

 it preserves very uniformly its stoutness and irregular sparse ribbing. 

 It has two and a half smooth pale nuclear and nine subsequent whorls 

 of a bluish or brownish white color, sometimes with a purplish under- 

 tone, or faintly mottled with irregular blotches of pale brown, the 

 aperture waxen white and deep in the throat warm yellow-brown. 

 The surface is polished, free from spiral stride, obliquely ribbed with 

 (on the penult whorl 22-28) irregular sharp narrow ribs separated 

 by wider interspaces. The body is subcyhndric, the apex short and 

 subacute: the umbilicus minutely perforate, the triangle between it 



