122 Transactions. — Zoology, 



tooth with the base produced into two long processes, the anterior end 

 slightly reflected and trilobed ; lateral teeth versatile, broad, situated at 

 some distance from the central tooth, their apices acute, uncinate, and den- 

 ticulated on the inner side. 



Several specimens of this little mollusc were sent me by Mr. T. F. 

 Cheeseman from Auckland, where, I believe, it is not uncommon. The 

 animal much resembles the Coriocella noire, Blainville, Malacol., t. 42, 

 f. la, figured by Gray in Figures of Molluscous Animals, pi. 104, f. 3. I 

 take it to be Gray's Lamellaria ophione, because it is said to be not uncom- 

 mon at Auckland, but Gray's description would do for many species of dif- 

 ferent genera, and by itself is unrecognizable. 



The animal mentioned by me in the Manual of New Zealand Mollusca, 

 p. 59, as perhaps Lamellaria ophione is quite different, and may be called 

 Lamellaria cerebroides, 



Ckypta costata, Deshayes. PI. XIV., fig. a. 



Dentition.- — Central tooth nearly as broad as long, the reflected portion 

 with three denticles on each side and a long median cutting-point ; the 

 first lateral has seven denticles, the second and third are nearly smoth, 

 with four or five obsolete denticles on the outer side. There is a papillate 

 horny jaw on each side of the mouth. 



The specimen figured was sent from Auckland by Mr. T. F. Cheeseman. 



Ckypta monoxyla, Lesson. PI. XIV., fig. b. 



Dentition. — Central tooth considerably longer than broad, with a single 

 lobe or denticle on each side of the reflected portion. First lateral with 

 the reflected portion sharply denticulated on both sides, about two den- 

 ticles inside and five outside the large apical denticle ; second and third 

 lateral strongly denticulated on the outer side. 



The specimen figured was collected at Auckland. 



Tukeitella rosea, Quoy and Gaimard. PI. XIV., fig. c. 



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

 the reflected portion finely denticulated on each side, and with a larger 

 median cutting-point. First lateral finely denticulated on the outer side ; 

 second lateral much broader than the third and spoon-shaped at the tip ; 

 both are finely denticulated on the outer side. 



The specimen figured was sent from Auckland by Mr. T. F. Cheeseman. 



Ceeithidea bicakinata, Gray. PI. XIV., fig. d. 



Dentition. — Length of the central tooth about two-thirds of the breadth ; 

 the posterior corners with a sharp cusp, which carries a single denticle at 

 its inner base ; reflected portion trilobed, the middle lobe larger and with a 

 cutting-point. First lateral broad, produced at the outer basal end into a 

 short stalk, reflected portion with a broad denticle and four or five smaller 



