PLATE CXXV. 



[Part Xl.—Marc/i 1910.] 



Fig. 1, 1 a. Cyyptaustenia silcuarensis, (i.-A., x 25. Cachar. 



2, 2 a. KARHiKNsis, 11. sp,, X 2o. Sikhim. 



3, 3 o. ovi'M, n. sp., X 2"5. Cachar. 



4, 4a. HELVA, n. sp., x 2o. South Sylhet Hills 



5, 5 a. No.NGsiNGRiENsis, n. sp., X 25. X.-\Vcst Khasi. 



6, G a. Macrochlamys beata, G.-A., x 2'5. Dafla Hills. 

 6 b. Animal viewed from right side, right shell-lobe, &c., 



x 4-5. 

 G f. Animal viewed from left side, left shell-lobe and foot, 

 X 4-5. 



