10 LIST OF CYCLOPHORID^I. 



Cyclost. variegatum Ffrussac. 



Cycloph.? orbellus Pfeiffer, 1. c. 108. n. 38. 



a. ? 



**** Whorls of operculum rather wide. Peristome straight. — 

 Passing to Tropidophora. 



22. CTCLOTUS TRANSLUCIDUS. 



Cyclost. translucidum Sow. Proc. Zool. Soc. 1843, 29. 106. n. 46., 

 Thes. Conch, t. 23. f. 4.; Pfeiffer, Kuster, Chemn. Conch. Cab. 

 13. n. 4. i. 19. t. 1. f. 8—10. 



Aper translucidum Pfeiff. 1. c. 104. n. 5. 



a-f. ? 



g — i. Central America. From the Collection of Mr. Cuming. 



23. Cyclotus inconspicuus. 



Cyclost. Popayanum Lea, Obs. on the genus Unio, ii. 94. t. 23. f. 76. ; 



Pfeiffer, Kuster, Chemn. Conch. Cab. 55. n. 48. i. 19. t. 7. f. 7 — 



10. 

 Cyclost. inconspicuum Sow, Thes. Conch, i. 109. n. 56. t. 24. f. 73., 



74. 

 Aper. Popayanum Pfeiff. 1. c. 104. n. 6. 



a, b. New Granada. 



24. Cyclotus asperulus. 



Pyxis sp. Humph. MS. 



Cyclost. asperulum Sow. Thes. Conch, i. 91. n. 2. t. 23. f. 3.; 



Pfeiffer, Kuster, Chemn. Conch. Cab. i. 19. t. 20. f. 16—17. 

 Aper.? asperulum Pfeiff. 1. c. 104. n. 7. 



a — c. Jamaica. From the Collection of Mr. Cuming. 



25. Cyclotus conoideus. 



Cyclost. conoideum Pfeiffer, Kuster, Chemn. Conch. Cab. i. 19. t. 



13. f. 19—21. 

 Cyclost. spurcum Sow. Thes. Conch, i. 99. n. 26. t. 24. f. 75, 76. 

 Trop. conoidea Pfeiff. 1. c. 107. n. 15. 



a, b. S. America (collected by Capt. Fitzroy, R.N.). Pre- 

 sented by J. E. Gray, Esq. 



26. Cyclotus semistriatus. 



Cyclost. semistriatum Sow. Thes. Conch, i. 19.n. 3. t.23. f. 6. ; Kuster, 

 Chemn. Conch. Cab. I 19. t. 20. f. 10—12. 



