559 



seen in front of it. The socket of the corresponding tooth is better preserved in the lower 

 jaw. The socket of the last molar has been laid open on the inner side of the right ramus 

 and the tooth removed. Five of the inferior incisors have been preserved, and the sockets of 

 the two above show that they have been accidentally lost. 



Hunterian. 



3356. The upper part of the cranium, with the upper tusks, premaxillary bones, and 



the sockets of the two upper incisors, of the Phacochcerus ^JUliani. 



Hunterian. 



3357. A portion of the upper part of the cranium, with the upper canines, premaxil- 

 lary bones, and right and left upper incisors, of the Phacochterm ^Eliani. 



Hunterian. 



33 53. The upper part of the skull, with the bony palate, the last molars, last pre- 

 molars, and canine tusks, of the Phacochcerus ^lia/ii. 



The traces of the sockets of the second molars, m 2, still remain ; those of the two upper 

 incisors are almost obliterated. The section of the basisphenoid exposes the sinus which com- 

 municates with the right pterygoid sinus. The cells at the outer part of the base of the 

 pterygoid do not communicate with the internal pterygoid fossae. 



Presented by Prof. Owen, F.R.S. 



3359. The anterior extremity of the cranium, with the upper tusks, of the Phaco- 

 thotrus jEliani. Ifus. Srit. 



3360. The skull, with the dried integument, longitudinally bisected, of the Phaco- 

 chaerus ^Eliani. 



Notwithstanding the superior size of the skull, the cranial cavity is not larger than that of 

 the Babyrouisa, but is curved from before backwards and downwards in a greater degree, so 

 that the tentorial ridge is almost horizontal. The frontal sinuses are almost separated from 

 the parietal and occipital ones by the near approximation of the inner to the outer table of 

 the skull between the orbits. In the left half of this skull the grinding surface of both upper 

 and lower molar series is exposed, the upper series showing five teeth, as in the Babyroussa, 

 viz. two premolars, p 3 & p 4, and three true molars, m 1, m 2 & m 3 : but the first molar, m 1, 

 is reduced to the last rudiment, and is almost squeezed out of place by the approximation of 

 the second molar, m 2, to the last premolar, p 4. A remnant of the first molar, m 1, is pre- 

 served in the lower jaw ; but the grinders are here four in number, because no other premolar 

 save the last, p 4, is retained. In the opposite moiety the jaws are preserved in natural 

 position ; a greater proportion of the first true molar remains in the upper jaw, but it is 

 wholly shed in the lower jaw, although the interval is not quite obliterated. 



Presented by Sir Ever ard Home, Bart., V.P.R.S. 



