6 Descriptions of Thirty Supposed New Species and 



GEOMELANJA PARVA. This shell greatly resembles G. 

 clegans, small var. But the transverse ribs are much more 

 close and numerous, and the spiral striae are finer, slightly 

 impressing the ribs. The lip is entire, without any sinus 

 between the labrnm and labium. "Whorls remaining, 5. 

 Mean divergence from 15 to 16, length rather more 

 than .16, breadth .05. 



Habitat, Peace River, Manchester. 



GEOMELANTA PROCERA AD. When the late Professor 

 C. B. ADAMS described this shell, it was unique, and in my 

 cabinet. I have the same specimen now before me, but I 

 am wholly unable to detect under a triplex pocket lens of 

 high power, the " very numerous microscopic lightly im- 

 pressed spiral stride in the intercostal spaces," which he 

 mentions at p. 95, Cont. to Conch. 



CYLINDRELLA PEARMAN.EANA. This shell approaches 

 nearest to Cyl. alba var striatella (Cont. to Conch p. 20) 

 and may be C. alabastrina. Pfr., of which I have not 

 seen even the description. Shell almost cylindrical, round- 

 ing off in the last whorl, and with convex outlines from the 

 9th whorl towards the truncate apex ; cream white. Striae 

 very visible under a good lens, but much finer than in 

 O. alba var. striatella. Half of last whorl carinated ; but 

 by no means so much so as in the last-named shell. Apex 



truncate with loss of ? whorls ; whorls left, fourteen, 



much flattened, but with a well-impressed suture. Last 

 whorl much produced, obliquely. Aperture sharply 

 angular on the right side, and rounded rather on the left ; 

 so that when the shell is held with the apex to the right, 

 the aperture is like a tunnel or archway. Lip reflected, but 

 little thickened, shining. Length .71, greatest breadth, 

 .14, least breadth, at apex, .07. 



Habitat, Retrieve, Westmoreland. 



CYLINDRELLA MAUGERI WOOD. In defiance of the 

 opinions of some of the greatest naturalists of the day, I 

 presume to think that an alteration should be made in the 



