/ 



GASTEROPODA. 



453 



Fig. 238. Operc. 

 of Cassis. 



Fig. 239. One of the buccal plates 

 of Triton, 40. (Wilton.) 



Fig. 240. Teeth of Triton, 24 o. (Wilton.) 



Fig. 241. Dolium perdix. (Original 



Fam. 3. Muricidce (including Buccinidce) : teetli 1, 1. 1. (p. 28). 



Fig. 242. Murex tenuispina. (Wilton. 



X 2 



