Mean divergence about 123°; greatest breadth .125 inch; least 

 breadth .115 inch; height .98 inch. 



Helix inconspicua. Shell subdiscoidal ; whitish or pale horn 

 color; with very fine stria) of growth; spire scarcely elevated con- 

 vexly ; apex obtuse ; whorls nearly five, rather convex, narrow, 

 rather high, with a well impressed suture ; periphery of the last 

 whorl nearly in the plane of the spire, subangular ; aperture narrow 

 and lunate; umbilicus more than half as wide as the penult whorl, 

 subconcave. This species is intermediate between H. pcraffinis 

 and H. depressa. 



Greatest breadth ,175 inch; least breadth .15 inch; height .OS 

 inch. 



Pupa Jamaicensis. Shell cylindrical ; pale brownisli, horn col- 

 or ; with fine oblique stria? of growth ; spire tapering only near the 

 summit, into an obtuse apex ; whorls five, quite convex, with a deep 

 suture ; aperture semioval, with the right side longer, and shoulder- 

 ed above, and the transverse side a little oblique ; to the right of 

 the middle of the latter is a very promient stout tooth ; on the mid- 

 dle of the columella is another equally stout, but less prominent ; 

 on the right side is another prominent tooth directed between the 

 two above-mentioned, and on each side of it a rather smaller tooth; 

 lip moderatley reflected ; with a very small umbilious. 



This species is more exactly cylindrical than P. servilis, Gould, 

 P. procera, Gould, &c. which have a similar aperture ; the upper 

 and lower teeth of the right side are more conspicuous, and the 

 shell is much smaller. 



Length .07 inch ; breadth .025 inch. 



Pupa lata. Shell very short, subcylindrical, truncated anteri- 

 orly ; pale brown or horn color ; with very regular rather distant 

 microscopic transverse lines, which are more distinct on the upper 

 whorls ; spire cylindrical ; apex conoid ; whorls five, very convex, 

 with a deep suture ; last whorl making nearly a right angle between 

 its lateral and anterior surfaces ; aperture about two-thirds of a cir- 

 cle, without teeth; lip not reflected, with a smooth blunt margin ; 

 without umbilicus. 



Length .075 inch ; breadth .055 inch. 



Pupa hexodon. Shell ovate ; brown ; smooth and shining ; 

 spire with convex outlines ; whorls five, rather convex, with a well 

 impressed suture ; aperture semioval, with the transverse lip rather 



