CYCLOTUS. 



Plate III. 



Species 11. (Fig. a, h, Mus. Cuming.) 



Cyclotus corrugatus. Cycl. testa awjulate exxavato- 

 umbilicatd, sitbdepressd, solidd, fidvo-fuscescente, an- 

 fraclibiis vaiidissinw iiudiilatu-corrugatis, ad basin 

 angulath et crasse margiuatis. 



The wrinkled Cyclotus. Shell angularly excavately 

 urabilicated, slightly depressed, solid, fulvous-brown, 

 whorls very strongly uudulately wrinkled, angled and 

 thiekly margined at the base. 



Ci/closfoma cornigatmn, Sowerby, Pro. Zool. Soc. 1843, 

 p. 30. 

 Ci/clotns corruf/atits, Pfeiffer. 



Hnb. Jamaica. 



The wrinkled sculpture in this species has a conspicuous 

 waved character, varying, however, very much in strength. 



Fig. 12. (Fig. a, h, Mus. Cuming.) 



Cyclotus vaeians. For description of this extremely 

 variable species see Plate VII., where a more characteris- 

 tic specimen of it is figured. 



Species 13. (Fig. a, b, Mus. Cuming.) 



Cyclotus cingulatus. Cyd. testa modici profundi iim- 

 bilicatd, subdepressd, usi/clate olivaceo-f/iscd, ad pe- 

 ripheriam saturate fasciatd, uiifractibtis ad sntiiras 

 concavo-impressis, dehide declivi-convexls, concentrice 

 filoso-striatis, oblique reticnlato-iucisis. 



The girdled Cyclotus. Shell moderately deeply um- 

 bilieated, rather depressed, burnt olive-brown, dark- 

 banded at the periphery, whorls concavely iuipressed 

 at the sutures, then slopingly convex, concentrically 

 _ thread-striated, oblicjuely reticulately engraved. 



Ci/closloma cingulatum, Sowerby, Thes. Conch, part ix. 

 p. 93.pl. 29. f. 213, 21-4." 

 Cyclotus cimjulatus. Gray. 



llab. New Granada. 



This beautiful species is distinguished by a sloping 

 convexity of the whorls, which are sculptured by a loose 

 oblique network of superticially-engraved grooves. 



Species 14-. (Fig. a, b, Mus. Cunung.) 



Cyclotus Quitensis. Cyd. testa subaperte umbilicatu, 

 modice depressn, vivide fulvescente-casianed, versus 

 aplceiit rosacea, ad peripheriam pallide fasciatd, an- 

 fractibus ad suturas concavo-impressis, concentrice 

 rude striatis, striis subtus validis. 



The Quito Cyclotus. Shell rather openly umbilicated, 

 moderately depressed, l)right fulvous-chestnut, rose 

 towards the apex, faintly banded at the periphery, 

 whorls concavely impressed at the sutures, concen- 

 trically rudely striated, striae strong beneath. 



CydostoriM Quitense, Pfeilfer, ^ro. Zool. Soc. 1851. 

 Cyclotus Quitensis, Pfeifl'er. 



Uab. Quito. 



A shell of rather solid growth, pink about the apex, 

 with the strife much increasing in strength towards the 

 umbilicus. 



Species 15. (Fig. a, b, Mus. Cuming.) 



Cyclotus crassus. Cycl. testa augulate excavato-um- 

 bilicattt, crussii, sordidi fused, anfraclibus declivi-con- 

 ver.is, superne rude corrucjatd et malleatd. 



The thick Cyclotus. Shell angularly excavately um- 

 bilicated, thick, dull-brown, whorls slopingly convex, 

 rudely wrinkled and malleated at the upper part. 



Cyclosloma crassuni, C. B. Adams, Contr. Conch, n. viii. 

 p. 143. 



Hub. Jamaica. 



A small species, possessing the typical character of the 

 wrinkled Jamaica forms obscurely developed. 



Auo-ust. 1863. 



