24 DR. J. E. GRAY ON THE SUID^. [Jan. 9, 



at occiput 8| inches (see Miiller, Verh. t. 32. f. 3, 4). Nose rather 

 broad behind, tapering from the orbits, more compressed in front ; 

 concavity on cheek very deep ; forehead convex ; zygomatic arch 

 very large, swollen, convex externally. The side of the lower jaw 

 much swollen and prominent. The nose of this skull is much wider 

 than that of the skull from Ceram (7l2d). 



No. 1362a. An adult skull, without cutting-teeth and canines, 

 and rather broken on the nose, received from Mr. Wallace as the 

 skull of iS*. vittatus from Borneo, is very similar to no. 712 c from 

 Java, \A\ inches long, 8f inches high at the occiput. The fore- 

 head not quite so convex ; but in almost all other respects they 

 agree, except that the sides of the lower jaw are not so much swollen 

 and convex. These skulls are known from those of S. vittatus by 

 the concavity in the front of the orbit being very deep, ovate, and 

 narrow behind, instead of broad and square (that is, ending in a 

 nearly straight line). 



Three other adult skulls, apparently belonging to the same species, 

 were received without any habitat (but probably from Java or some 

 other Dutch colony) from the Utrecht Museum. One is 15 inches 

 long, 9g inches high at the occiput ; the second 16 inches long, 

 9^ inches high at the occiput ; the third, length 1 5, height at the 

 occiput S\ inches. 



Var. cerandca. No. 712c?. Skull, adult. A Wild Boar from 

 Ceram, collected by Mr. Wallace. Length 15 inches, height at oc- 

 ciput 8 inches. Nose tapering, very narrow, compressed and deeply 

 concave on each side in front of the orbits ; the zygomatic arch large, 

 swollen, and convex externally ; the crest on the sheath of the upper 

 canine is narrow and short. 



No. 7\2f. An adult skull, obtained from the Utrecht Museum, 

 named " Sua larvatus," without any habitat, which is very like 7\2d 

 from Ceram, but considerably larger, being 16^ inches long and 

 8| inches high ; the nose is broader and rather wider in front over 

 the canines ; the crest on the hinder part of the sheath of the upper 

 canine is similar, smaller, but thicker. 



In both skulls the crest on the canine is much shorter and less 

 marked, and the sides of the lower jaw are swollen, but not so swollen 

 and convex as in 712 c from Java. 



The specimen from Ceram (712e?) differs from all the others in 

 the nose being much narrower, more compressed, and apparently 

 longer compared with the length of the brain-case. 



Otherwise the four skulls from the Utrecht Museum aud the one 

 from Java (712c) are all very much alike. 



Mr. Blytli considers his Sus ceylonensis (Journ. Asiat. Soc. Beng. 

 XX. 1 73 ; Sus zeylane7isis, Blytb, MS. photogr.) a variety of IS. 

 barbatus, which he says has been introduced from Borneo to Ceylon. 

 Judging from the photograph of the skull, which has Sus zeylanensis 

 written on it, it is much shorter and thicker than the skull of ^'. 

 barbatus. The pliotograph is much more like that of Sus verru- 

 cosus. 



