PLATE CVI. 



[Part X.—Aj)nl 1907.] 



Macrochi-amys sequax, Bs. Darjiling. (Ex Blatiford Collection.) 



Fig. ]. Shell, X 2 1.: typical. 



1 a. Genitaliaj x 8. 



1 b. Jaw, X 24. 



1 c. Admcdiau tcctli oF radiila, 10th to ICth. 



] d. Oiitennost teeth. 



JIackochlamvs sequius, n. sp. Damsang. 



Fig. 2. Shell, x 2-5. 



2 a. Animal, viewed from left side : shell removed, showing visceral sac, x 8. 



2 b. Edge of mantle, showing shell- and ncck-lobcs, x -4. 



2 c. Ditto, showing left shell-lobe. 



2 d. The generative organs, x 8. 



2 e. Kalk-sac or flagellum, with spermatophore forming. 



2/ Jaw, X 24. 



2(/. Portion of row of radula, 8th to 15th admediau teeth. 



Mackochlamys sequax?, Bs. Darjiling. (From Colonel Mainwariug.) 



Fig. 3. Right side : right shell-lobc in life. 

 •'5a. Ditto: ditto, more extended. 

 .3 6. Extremity of foot in life. 



Mackochlamys satuilaensis, n. sp. liichila. 



Fig. 4.. Shell, x 2-5. 



4«. Part of the generative organs, x 45. 



4b. The jjcnis (c«, ctecum), x 8. 



4 c. Jaw, X 12. 



