PLATE C. 



[Part IX.— November 1899.] 



Khasiella vidua, W. T. Blf. Muuipur Hills. 



Fig. 1. Animal, from the right side, mautle-zone removed, x 4'5. i, iutestiue; 

 b, integument eovering branchial chamber. 

 1 «. Extremity of the foot, x 4'5. 

 1 b. Mantle-zone removed, showing right and dorsal shell-lobes, x 8. 



1 c. Ditto, showing the left shell- and dorsal lobes, X 8. 



2. Shell, X 3. 



2 a. Portion of shell, to show the costulation, x 8. 



3. Genitalia, x 4-5. 



3 e. The cajcum of the male organ, x 8. 



4. Jaw, X 24. 



5. Centre tooth and adjacent medians, x 365. 

 5 a. 14th to 19th teeth, x 365. 



5 b. 20th to 23rd lateral teeth, X 365. 



5 c. Ditto, X 365. 



5 d. Outermost or marginal teeth, X 365. 



