1895.] NATURAL SCIENCES OF PHILADELPHIA. 207 



refiexed, thin; parietal lamina strong, short; axial lamina incon- 

 spicuous in front. Alt. 28; diam. 12 mm. Cat Island, Bahamas. 

 This species and the next are peculiarly unlike all others known 

 in being densely, conspicuously spirally striated. 



Cerion (Maynardia) Johnsoni I'. and V. 



Shell turreted , elongate, the last ichor/ widest, the others forming a 

 tapering spire, the earlier whorls of the form seen in a young Euca- 

 lodium. Surface densely spirally striate, and hearing very stout, 

 distant ribs; 11 on penult., one or two fewer on earlier whorls. 

 Whorls 111, very convex. Aperture about one-third the alt., oval- 

 cordate; parietal lamina small. Color cream- white. Alt. 82 ; diam. 

 11 mm. Locality unknown ; one specimen from coll. C. W. Johnson. 



This is really the most remarkable form of Cerion yet discovered, 

 allied to C. felis in sculpture, but in the tapering contour wholly 

 unlike anything known hitherto in the genus, with the exception of 

 Phjxi scalarina Gundl. , which is much smaller, with less attenuated 

 earlier whorls. 



Cerion (Maynardia) columna 1'. and V. 



Shell thick, strong, cylindrical or column-shaped, the latter 4-5 

 whorls of equal diameter, those preceding forming a cone of one- 

 fourth the shell's length; bluish-white, flesh- tinged on cone, some 

 whorls of which are finely, closely striate ; the stria? then either 

 disappear, leaving the median whorls smooth, or become coarse, 

 wide- spaced, irregular costa 1 on median whorls, stronger on last whorl. 

 Whorls 18, hardly convex. Aperture small, less than one-third the 

 alt., long-ovate, gothic- angular above ; interior deep purple-brown, 

 often becoming red-brown toward the wdiite lip, which is everywhere 

 revolutely refiexed, but not thickened. Parietal tooth strong and 

 (for a Maynardia) long. Axial lamina moderate. Alt. 46i ; diam. 

 12 \ mm. Inagua. 



Differs from the closely allied G. infanda in the smaller and colored 

 aperture, less compressed body-whorl, etc. ; from G. reginu it differs 

 in the more elongate form, colored mouth and less excavated umbil- 

 ical tract ; from ( '. regium in the more slender contour, etc. It 

 resembles in shape, Pupa cretacea Pfr.; but that species is far more 

 obtuse than any of the dozen specimens of this before us. A variety 

 which may be called v. valida is smaller, strongly and subregularlv 

 costate throughout. Inagua. Alt. 34; diam. 10* mm. 



