NO. 1466. NOTES ON MALAYAN PIGS— MILLER. 739 



portion so long that the distance from middle of intororbital space 

 to tip of nasals is considera))ly more than twice that from inter- 

 orbital space to occipital crest; parietal region narrowing to a ridge in 

 fully adult individuals; interpterygoid space not extending forward 

 between palatines; mandibular tusk of male with outer face near]3' as 

 wide as inner and about one and one-half times as wide as posterior 

 face. 



While these characters appear to circumscribe the group XQvy 

 definitely, at least so far as the Bornean atid Sumatran species are 

 concerned, their taxonomic importance, as well as the question whether 

 Eusus should be recognized either as a subgenus or genus, can be 

 properly discussed only in connection with a general revision of the 

 Malayan pigs. The members of the bai'hatus group are confined, so 

 far as is now known, to the islands of the Malay Archipelago. The 

 range of one species, however, extends to Batam Island, close to 

 the southern extremity of the Malay Peninsula. The three known 

 Bornean and Sumatran forms may be distinguished as follows: 



KEY TO THE BORNEAN AND SUMATRAN REPRESENTATIVES OF THE SUS KARBATUS GROUP. 



Upper length of skull iu adult male 570 mm. {probal)ly often more); occiput pro- 

 duced conspieuoush' behind foramen magnum Snx (jargantua, j). 743. 



Upper length of skull in adult male 460-510 mm. ; occiput scarcely produced behind 

 foramen magnum. 



Third lower molar with three cross ridges and a terminal heel . .Sits barhatns, p. 739. 

 Third lower molar with two cross ridges and a terminal heel Sns oi, p. 741. 



SUS BARBATUS Miiller. 



Plates XXXIX, XLII, XLY, XLVIII, XLIX, and LT. 



1839. Slis barbatus Muller, Tijdsclirift v(jor Natuurlijke Cxeschiedenis en Physi- 



ologie, V, p. 149. 

 1S39-44. Sus barbatus Mullek and Schlegel, Verhandel. over de Natuurlijke 



Geschiedenis der Nederl. overzeesche Bezittingen, zoologie, p. 179, pis. xxx, 



XXXI. 



1885. Sus longirostris Nehrinc;, Zool. Anzeiger, VIII, p. 347, June 15, 1885. 

 1888. Sus longirostris NEniiiNo, Al)liandl. u. Berichte des kgl. zool. u. anthrop.- 



ethnogr. Mus. zu Dresden, 1888-1889, p. 18, tigs. 13 and 14. 

 1902. Sus longirostris Miller, Proc. Biol. Hoc. Washington, XV, p. 51, March 5, 



1902. 



1904. Stis barbatus Volz, Zool. Jahrl)iicher, Al)th. Syst., XX, p. 518, July l(j, 

 1904 (part). 



1905. Sus barbatus Jentink, Notes from the Leyden Museum, XXVI, p. 161, 

 pis. II, V, October 16, 1905. 



Type locality. — Banjermassing, southern Borneo. 



Geographic distrihution . — Borneo ; f 1 ava i " 



Characters. — Upper length of skull of adult male, 440-490 mm.; 



occipital region bent upward so that lower edge of condyle is consid- 



1^ ■ 



"Doctor Volz has shown (Zool. Jahrb. Abth. Syst., XX, pp. 535-536) that the 

 occurrence of this animal in Java is doubtful. 



