201 



which Cuvier refers to that genus. From the closer resemblance which 

 the Coryphodon eocenus presents to the true Lophiodons, it more probably 

 belonged to the same family of tapiroid Pachyderms, in which it un- 

 questionably indicates a very distinct and remarkable additional species. 



The original of the present cast was dredged up from the bottom of the 

 sea, between St. Osyth and Harwich on the Essex coast, and is now in 

 the collection of John Brown, Esq. of Stanway Green, near Colchester. 

 From the pyritic matter which has been deposited in the pulp-cavity of 

 the penultimate molar there can be little doubt but that the fossil had 

 been imbedded in the Eocene London Clay of the Harwich coast. 



Presented by John Brown, Esq., F.G.S. 



827- A canine tooth, apparently from the right side, lower jaw, with the 

 summit of the crown broken off accidentally, but showing the effect of the 

 action of the upper canine in an excavated surface at the posterior part 

 of the crown. The general proportions of this tooth, its degree of cur- 

 vature, and the relative length, of the crown and the fang, accord pretty 

 closely with those of the canines of different species of Lophiodon 

 figured by Cuvier in the 'Ossemens Fossiles,' 1822, torn. ii. pt. 1. pi. 10. 

 fig. 3 and 12, pi. 9. fig. 1 1. Like the canine of the Lophiodon tapiroides 

 in pi. 9. the growth of the present tooth was completed and the fang 

 terminated by an obtuse solid extremity : but it differs in the fang being 

 less expanded ; it is at no part so thick as the base of the enamelled 

 crown : in this respect it resembles more the canine of the Lophiodon 

 medius, pi. 10. fig. 12, but the crown of the present tooth is proportion- 

 ally more expanded at the base. The proportions of the crown more 

 nearly resemble those in the Lophiodon Isselanus, pi. 10. fig. 3, but the 

 fang is ventricose in that species, as in the Lophiodon tapiroides. Cuvier 

 does not give a figure of the transverse section of the crown of the 

 canine in any of his specimens : that of the present tooth is very cha- 

 racteristic, and resembles the transverse section of the crown of the 

 teeth of the great Pliosaurus ; the outer surface being flattened, and 

 the rest of the crown so convex as to describe a semicircle : a ridge of 

 enamel along each border of the flattened side separates it from the 



2p 



