THE CYCLOPHORiID LAOSID MOLLUSKS OF AMEIRIOA 79 



Shell small, helicoid, flesh colored, with a brownish flush. The nu- 

 cleus consists of a little more than a single turn, which is well rounded 

 and smooth. The postnuclear whorls are inflated, strongly rounded, 

 and marked by feeble, retractively curved axial riblets, which are 

 about half as wide as the spaces that separate them. On the last 1.5 

 turns feeble wrinkles make their appearance, which on the last whorl 

 are very regularly developed and distributed. They are not very prom- 

 inent even here. Suture moderately strongly impressed. Periphery 

 strongly rounded. Base inflated, strongly rounded, very narrowly um- 

 bilicated, marked by wrinkles, pits, and nodules. The umbilical wall 

 is marked by slender riblets and lines of growth. Aperture circular, 

 oblique, protracted into a clawlike element at the posterior angle; outer 

 lip of the peristome thin, the inner somewhat thickened. Operculum 

 typically cyclopilsbryid. 



The specimen figured, U.S.N.M. No. 474033, bears the label "Ja- 

 maica," without definite locality designation. It has 4.6 whorls and 

 measures: Height, 12.3 mm.; greater diameter, 16.2 mm.; lesser 

 diameter, 12.5 mm. 



This species resembles in size and shape G. (O.) nifJahris (Chitty), 

 from which it can be easily differentiated by its weak sculpture. 



Two additional specimens in our collection are also without locality 

 designation. 



CYCLOPILSBRYA (CYCLOPILSBRYA) BESWICKI (Chitty) 



1857. Cyclotus beswicki Chitty, Proc. Zool. Soc. Ix)ndon, p. 157. 

 1898. Neocyclotus {Plectocyclotus) beswicki Kobelt and Mollendokff, Nachrb. 

 deutschen malak. Ges., vol. 29, p. 138, reprint. 



I have not seen this species, so I quote Chitty's description : 

 ^^Form, subglobose-conic. Colour, pinkish, with light brown epi- 

 dermis. Sculpture, very coarse lines of growth, very slight distant 

 corrugation on the last whorl, coarser below ; fine lines of growth within 

 umbilical keel. Spire, well elevated, with almost straight outlines. 

 WhoT'ls, 514, moderately rounded, with moderate suture. Aperture, 

 oblique and much dilated to the right below, depressed above. Peri- 

 treme, slightly sinuate above, sharp on the right. Umbilicus, moderate, 

 greatest width 0.25 [6.25 mm.]. Umbilical keel, strongly produced. 

 Opercuhmi, with lamina of about 9 much incurved close spiral w^horls, 

 which are very slightly concave on the entire margins; end of last a 

 little incurved to preceding one. Height 0.75 [18.75 mm.] ; greatest 

 breadth 0.9 [22.5 mm.] ; least breadth 0.74 [18.50 mm.]. 

 "Bogue Estate, north-east corner of St. Elizabeth." 



Cyclocaymania, new subgenus 



In this subgenus the spiral lamella is curved inward to the very 

 edge, but attached to its free edge on the later turns is a broad fold, 



