FERUSSINA. UNCERTAIN SPECIES 65 



C. Uncertain Species. 

 1. Cyclostoma variegatum. 

 Cyclost. variegatum Swains. Pfeiffer, 1. c. 112. n. 9. 



2 r . Cyclostoma cincinn*atiense. 

 Cyclost. cincinnatiense Lea; Pfeiffer, I.e. 112. n. 1. 



3. Cyclostoma marginatum. 



Turbo marginatus Chemn. Conch. Cab. ix. 60. t. 123. f. 1075. a 



and b. 

 Cyclost. marginatum Pfeiffer, 1. c. 112. n. 5. 



4. Cyclostoma rivularis. 



Cyclost. rivularis Eichw.; Pfeiffer, 1. c. 112. n. 7. 



5. Cyclostoma limbiferum. 



Cyclost. limbiferum Menke, Kuster, Chemn. Conch. Cab. i. 19. t. 

 21. f. 6. 



6. Cyclostoma dentatum. 



Cyclost. dentatum Say ; Pfeiffer, 1. c. 105. n. 37. 



7. Cyclostoma carneum. 



Cyclost. carneum Menke MS. Pfeiffer, Kuster, Chemn. Conch. Cab. 

 65. n. 61. i. 19. t. 9. f. 11, 12. 



Hab.? 



Doubtful Species. 



8. Cyclostoma fasciata. 



Cyclost. fasciata Lamck. An. s. Vert. vi. 2nd ed. viii. 358. n. 14.,^ 

 Enc. Meth. t. 461. f. 7. ; Desk. Enc. Meth. Vers, ii. 42. n. 10. 



Cyclost. fasciatum Sow. Thes. Conch, i. 108. n. 52. t. 24. f. 65. 



Helix truncata Billw. Cat. ii. 948. n. 137. 



Helix decollata Chemn. Conch. Cab. ix. t. 136. f. 1256, 1257. ; 

 Favanne, Conch, t. 65. f. b. 10. 



Hab. St. Domingo. 



