diastema is long. The identity of P. ovinum with this species has 

 been determined by Filhol. 

 Hub. Europe. 



28232. Part of the palate, showing the canines and the first three 

 premolars of either side, and the remaining cheek-teeth of 

 the right side ; from the Upper Eocene of Debruge, near 

 Apt (Vaucluse), France. This specimen is noteworthy as 

 being one of the few with which the writer is acquainted, 

 showing the first tooth of the cheek-series. This tooth is 

 untouched, while pm. 4 is considerably worn, thus indica- 

 ting that the former was protruded at a later date than is 

 the case in other forms, and did not come into use with 

 the milk- dentition. 



Bravard Collection. Purchased, 1852. 



28232 a. Part of the left maxilla and premaxilla, showing the 

 canine, the last five cheek-teeth, and the broken base of 

 pm. 2 ; from Debruge. There is no trace of pm. 1. 



Bravard Collection. Purchased, 1852. 



28232 b. Numerous fragments of maxilla? ; from Debruge. 



Bravard Collection. Purchased, 1852. 



M. 2465. Part of the right maxilla, showing the six cheek-teeth ; 

 from Debruge. There is no trace of pm 1. 



Purchased, 1885. 



M. 2464. The palate of a young individual, showing the four milk- 

 molars and the first true molar of either side ; from De- 

 bruge. In this specimen, mm. 1 is as much worn as the 

 two succeeding teeth, and as it differs slightly in form 

 from pm. 1 in No. 28232, it would seem to indicate that 

 the latter tooth is a true " dent de r -emplacement ." 



Purchased, 1885. 



36941. The crowns of two molars, probably belonging to this 

 species; from the Upper Eocene of Bembridge, Isle of 

 Wight. One specimen is in germ, and the others but 

 slightly worn. Purchased, 1861. 



M. 1511. The anterior extremity of the cranium, showing the in- 

 cisors, canines, and the first three cheek-teeth of the left 

 side ; from Debruge. Pm. 1 i s present. 



Purchased, 1884. 



