744 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxx. 



duced backward that posterior overhang is nearly one-half occipital 

 height through condyle (see fig. 1); ratios to basal length:" of profile 

 length, 123.1; of height of skull when resting on mandibles, 53.8; 

 teeth essentially as in Sus harlKituH. (Plate XLIX, fig. 2, and Plate L.) 



Measureinents. — For measurements see table, pages 755 and 756. 



Specimens examined. — One, the type. 



Remarks. — This strikingly characterized species, the largest known 

 living pig, is at once recognizable by the great size of the skull and b}'^ 

 the conspicuously low, overhanging occipital region. As the type is a 

 young adult with teeth even less worn than in the type of Sus oi, and 

 with the basioccipital suture open (in the type of ^?/^ ol it is closed), 

 it is not unreasonable to expect that in aged individuals the skull 

 will be found to reach the enormous length of 600 mm. The exact 

 difference in form between the skull of Sus gargantua and that of Sus 

 harhatus and Sus oi.^ though readih^ appreciable to the eye is not easy to 

 describe. If the occipital region in the smaller animals were to be drawn 

 backward and downward until the condyle nearly reached the level of 

 the alveolar line, it would require only a slight further increase in the 

 backward projection of the occiput to give the skull approximately 

 the form that it has in the larger species. In both the ratio of occipi- 

 tal height through condyle to length of skull is about as 1 to 3, though 

 it is slightly more in the smaller than in the larger t3^pe. The less 

 relative height of the skull of /S'^/,s- gargantua when resting on the 

 mandibles is therefore chiefly due to the less relative elevation of the 

 condyle above the under surface of the lower jaw. (See Plate XL VIII. ) 



II.— THE sus CRISTATUS GROUP. 



It has long l)een known that pigs resembling Sus cristatus inhabit 

 the Malay Peninsula, but apparently no critical comparison has 

 recently been made between these animals and the true Sv.s cristatus 

 of India. There are fifteen skins and sixteen skulls in the U. S. 

 National Museum collected by Doctor Abbott on the west side of the 

 peninsula, and also two from Johore presented by Mr. V. B. Kloss. 

 Comparison of this material with two specimens of Sus cristatus in 

 the same museum and of one of. the Abbott skulls with the extensive 

 series of Indian specimens in the British Museum, shows that the 

 Mala3'an pigs are not Sus cristattis, and that among them are repre- 

 sented at least two local forms. 



The members of this group are rathei- large animals, with the gen- 

 eral appearance of the European wild boar, to which they are closely 

 related. The face is without special warty outgrowths or peculiar 

 developments of hair, though the l)ristles on chin and beneath jaws 

 are occasionally much elongated. The body is covered with coarse 

 hair that nearly or quite conceals the skin, even in fully adult animals; 



"Major, Ann. and Mag. Nat. His^t., <ith ser., XIX, May, 1897, pp. 540-541. 



