28 LIST OF CYCLOPHORIDiE. 



§ Spire conical. Axis perforated. Last whorl much compressed. 



1. Aeyc^us gibbus. 



Cyclost. gibbum Per. Mag. de Zool. t. 117. f. 1.; Sow. Thes. Conch. 



i. 139. n. 135. t. 30. f. 247, 248.; Kuster, Chemn. Conch. Cab. i. 



19. t. 17. f. 4—6. 

 Cycloph. gibbus Pfeiffer, 1. c. 108. n. 21. 



a. Cochin China. 



§§ Shell depressed. Axis umbilicated. Last whorl slightly com- 

 pressed. 



2. AlYCJEUS STRANGULATUS. 



Cyclost. strangulatus Hutton ; Pfeiffer, Kuster, Chemn. Conch. Cab. 



*i. 19. t. 17. f. 7, 8. 

 Cycloph. strangulatus Pfeiffer, 1. c. 108. n. 30. 



a — z. L an dour, India. From the Collection of Capt. Boys. 



c. Operculum horny, thin, many-whorled. Shell oblong, elongate. 

 Last whorls with a fold or spiral ridge on the inner side in 

 front of the axis, sometimes forming a groove in the outer lip. 



9. FARCIMEN. 



Shell oval or pupiform, elongate. Last whorl without any, or 

 only a very slight, angularity in front. Mouth circular. Peri- 

 stome reflexed. 



Farcimen Troschel in Menhe und Pfeiffer, Zeit. f. Malak. 1847, 



44.; Gray, Proc. Zool. Soc. 1847, 182. 

 Megalomastoma (pars) Pfeiffer in Menke und Pfeiff. Z.f. Malak. 



1847. 

 Megalomastoma sp. Swains. Malac. 1841. 



§ Peristome slightly thickened all round. 



1. Farcimen cyeindraceum. 



Helix cylindracea Chemn. Conch. Cab. ix. 166. t. 135. f. 1233. 

 Helix crocea Gmel. Syst. Nat. 3655. n. 243. 



Cyclost. flavula Lamck. An. s. Vert. vi. 146. 2nd ed. viii. 357. n. 13. 

 Cyclost. flavidum Gray in Wood's Ind. Test. Supp. t. 6. f. 31.; 



Sow, Thes. Conch, i. 108. n. 53. t. 24. f. 66, 67. 

 Cvclost. croceum Pfeiffer, Kuster, Chemn. Conch. Cab. i. 19. t. 



17. f. 1—3. 



