PLATE CI. 

 [Part X.— April 1907.] 



Bensonia camura, Benson. Sikkim. 



Fig. 1. Shellj natural size. 



1 a. Ditto, X 2'5. 



2. Mantle-edge and right dorsal lobe, x 2\). 



3. Extremity of foot, x 8. 



4. Mantle-edge and anterior part of visceral sac, X 1"5. 



5. Genitalia, removed from the aniuial, x 4'5. 



5 a. Ditto, seen from right side before removal, x 4"5. 



5 b. Ditto, seen from left side before I'cmoval, x lo. 



G. Jaw, X 12. 



7. Radula, part of, x .368. 



ca, caecum; rec, rectum: r.o, renal organ; ov, oviduct; F, penis; v.el. vas deferens; 

 k, kalk-sac; s;?, spcrmathcca : D, amatorial organ or dart-sac; rinP, riiil>, retractor 

 muscles of penis and dart-sac. 



