I'LATH IX 



xlpellum fissum n. sp., with bowed carina, magnified 5,6 diameters. 

 fissum n. sp., with straight carina, magnified j,X diametres. 

 1 . candidum n. sp., magnified 1 1 diameters. 



.-. .v. candidum n. sp. View of rostrum, sketch. 

 . virgatum n. sp., magnified 5,6 diameters. 



5 — 8'. Alepas lithotryae n. sp. 



;. Animal. lateral view; magnified 8,5 diameters. 

 Fig. 6. Mandible; magnified 80 diameters. 

 7. Maxilla ; magnified 1S0 diameters. 



S. Cirrus of 6 th pair, caudal appendage, penis; magnified 52,5 diameters. 

 8'. One of the rings of the penis; magnified 254 diameters. 



9. Lithotrya nicobarica Reinhardt, magnified 1,5 diameters. 



10 — 12. Lithotrya conica n. sp. 



I [O. Animal, lateral view; magnified 1,5 diameters. 



I ig. 11. Valves, magnified 5,5 diameters. A. Scutum; />'. Tergum; C. Carina. 

 Fig. 12. The scales of the peduncle immediately beneath the capitulum; 

 magnified 36 diameters. 



Fig- 13. '3" and 14. Lithotrya pacifica Borradaile. 



[3. Animal, lateral view; magnified 5 diametres. 

 1 : /. Rostrum; magnified 4,6 diameters. 

 Fig. 14. The scales of the peduncle immediately beneath the capitulum; 

 iiilied 36 diameters. 



