229 



952. A small fragment, with part of the last molar tooth, of a nondescript 



Pachyderm. The crown of the tooth is invested with enamel, and is tra- 

 versed longitudinally down the middle of one side by a deep angular 

 groove, and on the opposite side, but nearer one end of the tooth, by a 

 concave canal gradually widening as the tooth descends. The enamel 

 lining this depression is extremely thin : it forms a projecting ridge 

 along the end of the crown near this depression, and a similar ridge at 

 the opposite end of the tooth : the surface of the enamel is minutely 

 wrinkled. 



From the tertiary deposits at Bahia Blanca, near Patagonia. 



Presented by Charles Darwin, Esq., F.R.S. 



Genus Equus. 



953. The skull of a species of Equus as large as that of a Horse of fourteen 



hands and a half high. 



From Dunschaughlin Bog, Ireland. 



Presented by the Earl of Enniskillen, D.C.L. 



954. A posterior inferior molar of a small species of Equus. 



From the Crag at Walker's Cliff, Norfolk. 



Hunterian. 



955. An inferior molar of a species of Equus. 



From the drift deposits at Iffley. Hunterian. 



955'. The inferior molar of a recent Horse, placed by Mr. Hunter by the side 

 of the preceding fossil to illustrate its nature. Hunterian. 



956. An inferior molar of a species of Equus, the crown of which has almost 



entirely been abraded and the fangs are elongated. 



From the drift deposits at Iffley. Hunterian. 



957. The proximal phalanx of the right fore-foot of a species of Equus. 



Locality unrecorded. Hunterian. 



958. A middle, molar, right side, upper jaw, of a small-sized Horse or species 



of Equus. 



From the cave called Kent's Hole, Torquay, Devon. 



Presented by Gerard Smith, Esq, 



