66 [May, 1846. 



acute ; surface profoundly and rather densely punctulate ; each side of the 

 middle with an obsolete basal impression : scutellum small, transverse, rounded 

 at tip: elytra punctate-striate, the interstices flat, minutely and distantly punc- 

 tured : beneath glossy ; femora tinged with reddish-brown, piceous ; tibiae and 

 tarsi paler, piceous. 



2. B. ceneolus. Black-brassy ; feet as in the preceding. Pennsylvania. 



Slightly shorter and narrower than the preceding, which it much resembles, 

 but it differs from that species, apart of being somewhat shorter and distinctly 

 narrower, and of its brassy color, in having the thorax shorter and more pro- 

 foundly emarginate in front, and more strongly bisinuate behind ; in the elytra 

 being less profoundly punctate-striate, and the interstices more convex, and 

 less, and more obscurely punctulate. 



To be continued. 



The Committee to whom was referred the following paper 

 by Mr. Phillips, read 13th of January last, reported in favor of 

 publication. 



Description of a Neiu Fresh-water Shell, and Observations on 



Grlandina obtusa, Ffeif. 



By John S. Phillips. 



Physa princeps. Testa elongata conica, luteo vel griseo cornea, 

 nitida, lineis albis interrupts longitudinalibus picta ; anfractibus 

 5 6-subconvexis ; suturis appressis distinctis ; apice acuto ; 

 apertura elongata ; plica columellari obsoleta. 



Shell elongated, conic, yellow or grey horn color, highly 

 polished, with white, somewhat interrupted lines of growth fol- 

 lowing the marks of growth ; whorls 5 6, slightly convex ; su- 

 tures appressed distinct ; spire conic ; apex acute ; aperture elon- 

 gated, regularly rounded below, acutely angular above, columellar 

 fold obsolete. 



Length 1^-, breadth 5jL , length of aperture ^5 of an inch. 



See plate I, fig. 11, in No. 1. 



This beautiful Physa was brought from Yucatan, Central 

 America, by my friend Mr. Norman, the enterprising traveller 

 and author of " Rambles in Yucatan," &c. 



Among other species brought by Mr. Norman from Yucatan, 

 were some specimens of a Glandina, of which I have found no 

 description that would at all apply, except that of G. obtusa, Pfeif., 

 from Nicaragua, (Proceedings of the Lond. Zool. Soc, 1845.) 



