CYCLOTUS.— Plate I. 



Species 4. CFig. a, b, Mus. Cuming.) 



Cyclotus laxatus. Ci/d. testa latissime aperte mnbili- 

 catd, mbdiscoidea, intense oUoaceo-vindi, versus aplcem 

 uslulato-fuscescente, ad peripheriam anguste fasciatd, 

 atifractibusperaiigustis,superne dense reticulato-rugatis 

 et malleatis, infra concentrice corrugato-striaiis. 



The loosely-coiled Cyclotus. Sliell very broadly 

 openly umbilicated, nearly discoid, dark olive-green, 

 burnt-brown towards the apex, narrowly banded at 

 the periplieiy, whorls very naiTOW, densely reticu- 

 lately wrinkled and malleated at the upper part, con- 

 centrically wrinkle-striated below. 



Ci/clostoma laxatnm, Sowerby, Thes. Conch. Snpp. p. 159. 

 pi. 31 A. f. 303. 

 Cyclotus laxatus, Sowerby. 



Hab. Columbia. 



Characterized by an unusually discoid growth, and an 



exquisitely reticulated and malleated sculpture. 



Species 5. (Mus. Cuming.) 



Cyclotus Jamaicensis. Cijcl. testa angulatim, ercnvato- 

 umbilicatd, subdepressd, fulvd, roseo-brunneo lineare 

 multifasciatd, anfractibua declivi-convexis, dense ob- 

 lique striatis, ad suturas pllcato-malleatis. 



The Jamaica Cyclotus. Shell angularly excavately 

 umbilicated, slightly depressed, fulvous, linearly 

 many-banded with rose-brown, whorls slopiiigly con- 

 vex, densely obliquely striated, plicately malleated at 

 the sutures. 



Turbo Jamaicensis, Chemnitz, vol. ii. p. 377. pi. 309. 

 f. 3057. 



Ct/clostoma Jamaicense, Gray. 

 Cyclotus Uneatus, Gray. 



Ilab. Jamaica. 



An extremely variable species, sometimes smooth, often 

 more or less wrinkled. 



