28 



tooth, curving downwards so as nearly to reach the termination of 

 the labrum ; umbilicus open, exhibiting the volutions. 



Greatest transverse diameter nine-twentieths of an inch. 



This resembles the tridentata, JVob., but the upper tooth of the 

 labrum is much inflected, the spire is more elevated, and the size 

 is less considerable ;. in the former character it coincides with H. ' 

 injlecta, JV'ob., but that shell has the umbilicus closed. 



Presented to the Academy by Messrs. Hyde and Mason, who 

 found it in the vicinity of Philadelphia, where it is not uncommon. 



Since the above was written, I received a specimen from Mr. 

 Stephen Elliott, of South Carolina, fully equal in size to the 

 tridentata. 



H. EGENA. — Shell convex, polished : whorls five, not distinctly 

 wrinkled, rounded ; aperture rather narrow, transverse ; labrum 

 simple, at its inferior extremity terminating at the centre of the 

 base of the shell ; umbilicus none, but the umbilical region deeply 

 indented. 



Breadth more than one-tenth of an inch. 



This shell was found by Mr. John S. Phillips o"n the banks of 

 the Delaware River, about ten miles from Philadelphia. It is 

 much more elevated and not so broad as H. arborea, JVobis.; the 

 aperture also is of a different shape. It is much broader than the 

 H. ckersina, JYob. 



BuLiMUS MULTiLiNEATUS. — Shell conic, not very obviously 

 wrinkled ; whorls not very convex, yellowish white, with trans- 

 verse entire reddish brown lines ; a blackish subsutural revolving 

 line ; suture not deeply indented, lineolar ; apex blackish ; 

 umbilicus small, surrounded by a broad blackish line ; columella 

 whitish ; labrum simple, blackish. 



Length less than seven-tenths of an inch. Greatest breadth 

 less than seven-twentieths of an inch. This species was found by 

 Mr. Titian Peale on the southern part of East Florida. 



Pupa fallax. — Shell turreted, pale horn color ; wrinkles 

 rather obtuse, hardly prominent ; suture rather deeply impressed ; 

 volutions nearly seven, a little convex ; apex somewhat obtuse ; 

 aperture unarmed, suboval, truncated above by the penultimate 

 whorl, less than one-third the whole length of the shell ; labrum 

 nearly transverse, color of the exterior part of the shell ; colum- 

 ella reflected, rectilinear, longitudinal, forming an obvious though 



