CRETACEOUS SPONDYLOZOA 
(JS 
9. Otodus nanus, Er/. PI. XII, Pigs. 25—28. 
Eyerton, 1. cit., p. ICO. 
Ill addition to Egcrton’s figiu’e, I give representations of two specimens from 
Ootatoor and of one from Odium. All these three differ from the typical form by a 
larger size, but all agree in general form, proportion of width and thickness, etc. 
The specimen from Odium is nearly straight, and on one side show^s the origin 
of a small lateral cusp. 
10. Otodus minutus, Eq. PI. XII, Pigs. 29 — 30. 
Eijerton, 1. oit., p. ICO. 
This is very closely allied to the last, hut somcwdiat more slender and with 
proportionately larger cusps. It occurs both at Eondicherry and in the sandstones 
east of Ootatoor in the Ootatoor beds. The larger teeth are very like those of 
Lamna complanata , but arc convex on both sides. 
11. Otodus divjeugens. Eg. PI. XII, Eig. 31. 
E”'crtoii, 1. cit., p. ICO. 
The jteculiarity of this species is said to rest in the great development of the 
lateral cusps and in their position close to the cone. The specimen from Mr. Kaye’s 
collection is as yet unique. 
12. OXVRIIINA TRIANGULARIS, Eg. PI. XII, Figs. 32 — 33. 
Egertoii, 1. cit., p. ICO. 
The cones do not appear to differ in the least from those of Otodus nanus, 
but are said to have no lateral cusps, and are, therefore, referred to Oxyrhina. 
13. OxYRUiNA (Merlstodon), sp. PI. XII, Fig. 31. 
Our coUcctiou contains a single tooth from Olapaudy in the Arrialoor group ; 
it does not appear to have any trace of lateral cusps. The inner surface is somewhat 
more convex than the outer one, and both are longitudinally plicated, the ribs 
being very much thinner than the interspaces separating them, and they disappear 
towards the end of the cone. The edges are rather sharp and slightly crenulated. 
The whole tooth is very much of the type of the English Oxyrhina pai'adoxa, Ag. 
14. Odontapsis constrictus. Eg. PI. XII, Figs. 35 — 37. 
Egcrtoii, 1. cit., p. 171. 
This species is common both at Pondicherry and east of Ootatoor in the Oota- 
toor group. In one specimen from the latter locality, I have been able to trace on 
one side a very small lateral cusp ; it is situated very much posteriorly and low dowm. 
As regards the shape of the cone itself, the Indian specimens are perfeetly 
identical with some of those described by lleuss as Oxyrhina angustidens from 
Bohemia (Comp, lleuss, Boehm. Krcidef., pt. i, p. G, pi. iii, figs. 7 — 9). Both of 
them show the small depression at the centre of the outer basal margin of the cone. 
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