OF MOLLUSCA. 



133 



1. C. Mediterranean t. 63. f. 1. Pterotrachea Lophyra, t. 63. f. 3, 



t. 161. f. 2. C. cymbium, t. 161. f. 1. C. vitrea, 1. 154. f. 2. 

 Pterotrachea, t. 159. f. 3, without shell. 



2. C. Gaudichaudi, t. 239. f. 4. 



3. C. punctata, t. 11. f. 3, 4. 



4. C. australis, t. 62. f. 1. 



5. C. ?, n. s., t. 239. f. 2. 



Lateral tooth of Carinaria Mediterranea wide, base on both sides 

 Fig. 68. — Teeth of Carinaria Mediterranea, 



produced and winged, cutting edge three-pointed ; lateral teeth nearly 

 equal, process of the first spiniform, bent (fig. 68). 



Fam. II. ATLANTIC. 



Body spiral, enclosed in a shell. The pedal fin of both sexes 

 with a small posterior disk. Tentacles two. Teeth seven-rowed, 

 3 * 1 • 3 ; central lateral conical, curved, acute. Shell thin, involute, 

 keeled. Operculum calcareous. 



1. Oxygyrus. 



Shell cartilaginous, keeled ; nucleus involute, sulcated, chalky. 

 Operculum annular. 



1. O. Keraudrenii, t. 117. f. 3, operculum oblong, kidney-shaped; 



t. 129. f. 2, 1. 1 1 7. f. 1, operculum triangular, broad ; t. 117 c. 

 f. 3, t. 240. f. 2. Ladas Keraudrenii, t. 117 c. f. 6. 



2. O. Rangii, t. 240. f. 1 & 4, operculum roundish, trigonal. 



The central tooth {Oxygyrus Rangii) rather broad, the base on 

 Fig. 69. — Teeth of Oxygyrus Rangii. 



each side rather produced, the apex one-spined ; the lateral teeth 

 unequal, the first very large, broad, with an acute spine below the 

 tip, the second and third shorter, curved, entire (fig. 69). — Lorn/. 



