748 PltOCEEDINaS OF THE NATIONAL MUSEUM. 



Width of palate including third molars equal to or more than half length 

 of toothrow to front of canine in males or to third incisor in females. 

 Upper length of skull about 340 mm. in males, 820 mm. in females. 



Sus peninsularis, p. 749 

 Upper length of skull about 310 mm. in males, 285 mm. in females. 



An obvious though short diastema between canine and first pre- 

 molar Sus bahi, p. 752 



No evident diastema between canine and first premolar. 



Sus natunensis, p. 753 



SUS VITTATUS Miiller and Schlegel. 

 Plates LVIII and LXIV. 



1839-44. >S'»,.s rUtalus MtJLLERand ScHLEGEi-,Verhandel. over de Natuurlijke Ges- 

 chiedenis der Nederl. overzeesche Bezittingen, Zoologie, p. 172, pis. xxix, 

 XXXII. (Part.) 



1905. Sus rittatus Jentink, Notes from the Leyden Museum, XXVI, p. 175, 

 October 16, 1905 (name restricted to Sumatran animal). 



Type locality. — Sumatra. 



Geographic distrihution. — Mainland of Sumatra. 



Characters. — Size about the maximum for the group, head and body 

 of adult feniale about 1250 mm. (male not examined), upper length of 

 skull 300 mm. or more; skull slender, the width of palate including 

 widest part of posterior molars slightl}^ more than half distance from 

 back of last molar to front of canine in female; a distinct diastema 

 between canine and first premolar; braincase not specially narrowed 

 posteriorly, the parietal constriction equal to or wider than nasals; 

 teeth of moderate size, the last two upper molars together about 45 

 mm. long; greatest breadth of last molar distinctly less than least 

 width of palate at front of this tooth. 



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



Speci'mens examined. — Four collected by Doctor Abbott — one on the 

 Indragiri River, eastern Sumatra, three at Tarussan Bay, western 

 Sumatra; also the Sumatran material in Leyden described b}' Doctor 

 Jentink, « and that in Berne recorded b}'^ Doctor Volz.* 



Remarl's. — As Doctor Jentink has already pointed out, the pigs of 

 this group from Java and Sumatra are speciticall}" distinct. In the 

 original discription and figures of Sus vittatus the two animals are 

 inextricably confused. The name has, however, been arbitrarily 

 restricted to the Sumatran form. 



A young female (No. 113034, August 25, 1901) from Linga Island 

 may represent either this species or the next. 



a Notes from the Leyden Museum, XXVI, pp. 174-176, October, 1905. 

 &Zool. Jahrb., Abth. Byst., XX, pp. 513-518, July 16, 1904. 



