OF MOLLUSCA. 



129 



2. S. Pugilis, t. 81. f. 3. 



3. S. Auris-Dianae, t. 2. f. 1, and fig. 6 4. 



4. S. Canarium (var. Isabella), t. 2. f. 4 <?, 3 ? , t. 81 a. f. 1. 



5. S. gibberulus, t. 81. f. 1. 



6. S. Papilio, t. 81. f. 2. 



7. S. lentiginosus, t. 81. f. 5. 



8. S. variabilis, t. 2. f. 2. 



9. S. Luhuanus, t. 2. f. 6. 

 10. S. plicatus, t. 2. f. 5. 



U.S. vittatus, t. 84 a. f. 5 ; Gerc. Mo//, t. 27. f. 1. 



The foot of the Strombus is more or less rounded beneath, so that 

 it can be of very little use for the animal to walk upon. There is a 



Fig. G4. — Strombus Auris-Diance. 



p, proboscis between eye-pedicels. 

 m, mantle edge. 



/, foot. 

 r, siphon. 



o, operculum. 



Fig. 65. — Operculum 

 of Strombus. 



groove in the females on the right side of the body, which is con- 

 tinued across the front edge of the foot. The crystalline lens of the 

 eye is large, perfectly globular and horn-coloured, and easily extracted 

 by pressing the end of the pedicel of the eye ; the iris is well-marked 

 and differently coloured in the different kinds of Strombs. The oper- 

 culum is free for the greater part of its length, claw-shaped, and only 

 marked with a small scar (fig. 65). 



The young shells of Strombus gigas have the 

 upper part of the cavity of the upper whorls 

 nearly filled with a calcareous deposit of a rosy 

 tint, and the same kind of deposit fills up the 

 hinder angle of the cavity of the lower whorls. 



Central tooth of Strombus fioridus wider above, 

 convex ; cutting edge wide, with seven sharp 

 points ; first lateral tooth with the upper margin 

 convex, reflex, three-toothed ; second and third 

 similar, claw-like, simple, at the tips decussated with the opposite. 



K 



