74 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.40. 



and hence are relatively smaller. (See pi. 1, figs. 1 and 3, and pi. 2, 

 lower figure.) 



Measurements. — See table, p. 72. 



Specimens examined. — Two, the type and an adult female, Cat. No. 

 154383, from Pulo Mata Siri, and the frontlets and antlers of twenty 

 specimens, one from the Sakaiam River and nineteen from the 

 Kendawangan River. 



Remarks. — Muntiacus rubidus is very distinct from the other 

 Bornean muntjac, and is very readily separable from the larger 

 Sumatran animal. It closely approaches the muntjac of Banka, of 

 which it is scarcely more than a subspecies. This is another illustra- 

 tion of the close relation existing between the animals of Borneo and 

 Banka. I have referred the adult female from Pulo Mata Siri to 

 M. rubidus, because the skulls of the two specimens are almost exactly 

 alike. The skin of the Mata Siri specimen, however, is lighter in 

 color, and the legs are not nearly so dark. I can not believe that the 

 muntjac on Mata Siri is indigenous, but think it must have been 

 brought rather recently to the island from the mainland of Borneo. 



STJS "VITTATUS." 



1906. Sus wttatus, Miller, Proc. U. S. Nat. Mus., vol. 30, p. 748, June 13, 1906. 



Two pigs of the Sus vittatus groups were collected on Bawean 

 Island. Neither of them is fully mature. The older, Cat. No. 

 151841, has the last molars not quite level with the rest of the tooth- 

 row; the younger, Cat. No. 151840, has the last molars just breaking 

 through the alveoli. The skull measurements of the two specimens 

 are respectively: Upper length of skull, 330, 290; zygomatic width, 

 132, 120; parietal constriction, 37, 31; maxillary toothrow, 108, 

 ; m 2 , 20 x 16, 20 x 16; m 3 , 31 x 18, . 



SUS BARBATUS Muller. 



1839. Sus barbatus Muller, Tijdschr. Natuurl. Gesch. Physiol., vol. 5, p. 149. 

 (Type-locality, Banjermassing.) 



1906. Sus barbatus, Miller, Proc. U. S. Nat. Mus., vol. 30, p. 739, June 13, 1906. 



1907. Sus barbatus, Lyon, Proc. U. S. Nat. Mus. , vol. 33, p. 550, December 24, 1907- 



In addition to the six skulls of Sus barbatus obtained from the 

 natives along the Landak River in 1905, Doctor Abbott has since 

 obtained twenty-nine adult specimens of this pig from Borneo, and 

 adjacent islands. (See tables on pp. 76 and 77 for a list of these speci- 

 mens, with their external and cranial measurements.) The four 

 adult specimens from Pulos Pelapis and Panebangan average some- 

 what smaller than specimens from the mainland, and their teeth 

 show relatively more wear in proportion to their age, as judged by 

 skull sutures. I can find no satisfactory structural characters by 

 which they may be distinguished from mainland animals. The 



