PLATE LXXIII. 



[Part ^ III.— January 1898.] 



Damayaxtu smith I, CoUinge & Godwin-Austen. Borneo. 



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



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



1 h. 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. 



G. Central teeth of radula, x 368. 



7. Generative organs [sp.am.), x k 



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. 



