CYCLOTUS. 7 



? Cyclost. prominulum Ferus. 



Aper. Brasiliense Pfeiff. 1. c. 104. n. 12. 



a, b. Rio Janeiro. Presented by J. E. Gray, Esq. 



5. Cyclotus ? Duffianus. 



Cyclost. Duffianum Adams. 



Aper. Duffianum Pfeiff. 1. c. 104. n. 9. 



Hab. Jamaica. 



6. Cyclotus stramineus. 



Cyclost. stramineum Reeve, Proc. Zool. Soc. 1843, 41.; Sow. Thes. 



Conch, i. 93. n. 8. t. 29. f. 211, 212.; Pfeiffer, Kuster, Chemn. 



Conch. Cab. 94. n. 90. i. 19. t. 12. f. 6, 7. 

 Aper. stramineum Pfeiff. 1. c. 104. n. 11. 



Hab. Merida, in the Columbian Andes. 



7. Cyclotus plebejus. 



Cyclost. plebeium Sow. Proc. Zool. Soc. 1843, 60., Thes. Conch, i. 



94. n. 12. t. 25. f. 40. ; Pfeiffer, Kuster, Chemn. Conch. Cab. 56. 



n. 50. i. 19. t. 7. f. 14, 15. 

 Aper. plebejum Pfeiff. 1. c. 104. n. 15. 



a — c. Calauang in Lucon. From Mr. Cuming's Collection. 



ff Whorls of shell with a ridge near the suture. 



8. Cyclotus suturalis. 



Cyclost. suturale Sow. Thes. Conch, i. 91. n. 1. 1. 23. f. 1, 2. ; Pfeiffer, 



Kuster, Chemn. Conch. Cab. i. 19. t. 12. f. 10—12. 

 Aper. suturale Pfeiff. 1. c. 104. n. 14. 



a. Demerara. 



b—f. Jamaica. Presented by the Rev. Barham Zincke. 



** Whorls of operculum very narrow. Peristome double ; inner lip 

 simple, outer expanded. — Cyclotus Swains., passing to Pte- 

 rocyclos. 



9. Cyclotus distomellus. 



Cyclost. distomella Sow. Thes. Conch, i. 114. n. 68. t. 25. f. 94. ; 

 Pfeiffer, Kuster, Chemn. Conch. Cab. 95. n. 91. i. 19. t. 12. f. 4, 

 5. t, 28. f. 14, 15. 

 Aper. distomella Pfeiff. 1. c. 184. 16. 



a, b. ? 



c. Var. small. ? 



A 4 



