M0LLU8CA OF INDIA. 83 



Fig. 3. Jaw, X 8. 



4. Central teeth of odontopbore. X 368. 

 4«. 18th, 19th, and 20th median,' X 368. 



4 6. 20th, 21st, 22nd, and 23i-d median, X 368. 



4 c. Outermost teeth, x 368. 



5. Generative organs, X 4'6. 



5 a. The male organ, X 8. 



EXPLANATION OP PLATE LXXII. 



Cryptosoma imperator, Gould. Hongkong. 



Fig. 1. Shell, X 1-6. 



1 a. Shell and animal, nat. size (spirit-specimen), viewed from right side. 



1 b. Ditto, viewed from left side. 



2. Animal with shell removed, viewed from right side, X 4'5. 



2 a. Ditto, viewed from the posterior side, X 4"6. 



2 b. View showing left shell- and neck-lobes, X 4'5. 

 2 V. Mucous gland from posterior side, X 45. 



3. Buccal mass, x 4'5. 



4. Jaw, X 45. 



5. Central teeth of odontopbore, X 196. 

 5 a. Median teeth, 11th to IGth, x 368. 



5 b. Outer lateral teeth, X 196. 



6. Generative organs, x 4-5. 



6 a. The male organ, X 12*4. x, the side of the muscular sheath is here 



broken. 



EXPLANATION OF PLATE LXXIIl. 



Damai/antia smithi, Oollinge & Godwin-Austen. Borneo. 



Fig. 1. Animal, from right side (from spirit-specimen), X 2-5. 

 1 a. Ditto, from above, X 2'5. 

 1 b. Ditto, from left side, X 2-5. 



2. Shell, X 2-5. 



3. The visceral sac, shell removed, exposed, seen from above, showing 



single coil, X 2'5. 



4. Extremity of foot, showing mucous gland, X 8. 



5. Jaw, X 12. 



6. Central teeth of radula, X 368. 



7. Generative organs {sp.a7n.); X 4. 



7 a. Ovo-testes and hermaphrodite duct, X 8. 

 7 b. Portion of male organ, X 8. 



7 c. Ditto, another view, X 8. 



7 d. The calcareous dart in the amatorial organ, X 8. 



EXPLANATION OF PLATE LXXIV. 



Microparmarion simrothi, Collinge & Godwin-Austen. Borneo. 



Fig. 1 . Shell and part of mantle from above, X 3. 

 1 a. As seen from left side, x 3. 

 1 b. Head and fore portion of body and mantle, right side, x 4. 



2. View of right side of animal, shell removed, x 4. 



3. Portion of oesophagus, with salivary gland, X 4. 



4. Jaw, X 4. 



5. Generative organs, X 4. 

 5 a. Male organ, X 8. 



5 b. The calcareous dart in the amatorial organ, X 12'5. 



6. Generative organs of Parmarion pupillaris, after Semper. 



6 a. Calcareous dart (the " Liebesfeil "), after Semper. 

 6 b. Teeth of radula, after Semper. 



