Hutton. — On some Branchiate Gastropoda. 123 



ones outside it ; second lateral unguiculate, with four denticles ; third 

 lateral broader than the second, and with five denticles. Operculum multi- 

 spiral, with a ragged edge. 



The specimen figured was collected at Auckland. 



Ceeithidea nigra, Hombron and Jacquenot. PI. XIV., fig. e. 



Animal black, sparingly spotted with yellowish ; head-lobes marked 

 with yellowish ; tentacles black, with three or four rings of white. 

 Dentition. — Length of central tooth rather more than half the breadth, 

 reflected portion with five cusps, otherwise like C. bicarinata. First lateral 

 like bicarinata, but the broad denticle often bifid ; second and third laterals 

 like bicarinata, but the third with six denticles. 



The specimen figured was collected at Auckland. 



Melanopsis teifasciata, Gray. PI. XIV., fig. f. 



Dentition. — Central tooth subquadrate, broader than long, the posterior 

 angles sharp, the posterior margin wtth a convex, and the anterior margin 

 with a concave sinuation ; reflected portion with three denticles on each side 

 and a broad and pointed cutting-point, that extends under the denticles. 

 First lateral broad with three or four denticles. Second lateral rather 

 broad with a spoon-shaped tip provided with three blunt denticles, a clavate 

 accessory piece attached to the outer posterior corner. Third lateral narrow 

 expanded into a denticulate spoon-shaped apex. Operculum oval with the 

 nucleus subapical. 



Tbe specimen figured was sent by Mr. T. F. Cheeseman. 



Janthina exigua, Lamarck. PI. XIV., fig. g. 



Dentition. — Similar to that of J. communis. 



The specimen figured was given me by the Hon. G. McLean. 



Neeita ateata, Lamarck. PL XIV., fig. h. 



Dentition. — Central tooth rather small, quadrate, longer than broad, 

 posterior margin concave with a cutting-point in the centre. First lateral 

 very broad, the breadth nearly three times the length, expanding outwards, 

 and with a cutting-point on the inner posterior angle. Second and third 

 laterals minute plates ; fourth lateral with a .breadth twice the length, 

 arched, with a broad dark brown opaque cutting-point. Marginals numer- 

 ous with smooth points. 



The specimen figured was collected at Auckland. 



There are only four laterals, and the dentition seems to connect the 

 Trochiclce with the Chitonidce, although decidedly rhipidoglossal. 



HUTTONIA BELLA, Hutton {Eucliellis). PI. XIV., fig. I. 



Dentition. — Central tooth trilobed at the base, the central lobe smaller 

 and not projecting beyond the lateral lobes, reflected portion denticulated 

 on the sides. Laterals five, similar, getting longer as they are further away 



