202 



convex side of the crown. The flattened surface is gently undulating, 

 convex in the middle and concave at each side near the ridges in the trans- 

 verse direction : the crown is defended by two layers of enamel : the outer 

 and thicker layer has a minutely wrinkled surface and terminates near 

 the base of the crown by a finely plicated border ; extending lower upon 

 the posterior and outer than upon the anterior and inner sides of 

 the crown. The thin and smooth layer of the enamel extends to and 

 defines the base of the crown ; the outer layer being coextensive with 

 the inner one only at the two boundary ridges, and the inner layer 

 being extended further upon the tooth at its anterior and inner sides. 

 The length of this tooth must have been three inches when entire ; 

 the circumference of the base of the crown is two inches, nine lines. 

 The original was discovered in the London clay, near Camberwell, 

 during the excavations or borings for a well. This tooth, from its ob- 

 vious relations to the Lophiodon and its apparent specific distinction 

 from any in the known species, may probably belong to the same species 

 as that which, from the characters of the preceding specimen, I have 

 named Coryphodon eocenus, and which is from the same geological for- 

 mation, and agrees with it in size and in the wrinkled surface of the 

 enamel. Presented by Mr. Alport. 



Genus Tapirus. 



828. The plaster-cast of a considerable proportion of the right ramus of the 

 lower jaw of the Tapirus priscus, Kaup. The six molar teeth, with the 

 exception of the crown of the third, are preserved in situ. 



The original, which is in the Grand Ducal Museum at Darmstadt, 

 was discovered in the miocene tertiary beds of sand at Epplesheim, and 

 is described by Dr. Kaup in the ' Ossemens Fossiles du Museum de 

 Darmstadt,' 4to, 2de Cah.,p. 1 — 3. A more complete specimen is figured 

 in pi. 6. fig. 1 . of the same work. Presented by Dr. Kaup. 



