PLATE XXXVIII. 



[Part IN .—September 1883.] 



AusTENiA PLANOSPIBA, Beiisou. W. Bhutan Hills. 



Fig. 1. Geuerative organs, x 4. 

 1 a. Amatorial organ, x 7. 

 1 b. Buccal mass and gland, salivary gland, &c., x 4. 



AusTENiA BENSONi, Pfr. Calcutta. 



2. Radula, median and laterals, x 340. 



AuSTENIA BENSONI, Var. SYLHETENSIS. Sj'lhet. 



3. Shell, X 2-4. 



3 a. Extremity of foot and mode of carrying it (enlarged) . 

 3 b. Mantle-edge removed, x 4. 

 3 c. Radula, x 340. 



4. 4«. SiTALA ckenicincta: radula, x 1250. 



5. Kaliella barrakporensis : geuerative organs, x 12. 



6. To illustrate the dimensions as given in this work. 



