454 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.52. 



Specimens examined. — Two, skins and skulls from Tuanku Island. 



Remarks. — Geogi-aphically this pig ought to be closely related to 

 Sus vittatus, but its general appearance and rather wide rostrum 

 show its affinities -vsith Sus hali. All the pigs of this group are 

 rather closely related, but the forms from Babi, Tuanku, and Engano 

 seem to form a group in contradistinction to the others. 



sus BABI ENGANUS, new subspecies. 



1906 ? -Sus babi Miller, Proc. U. S. Nat. Mus., vol. 30, pp. 752, June 13, 1906, 

 and 820, June 4, 1906. 



Type-specimen. — No. 140950, U.S.N.M., skull of very old female, 

 collected on Engano Island November 30, 1904, by Dr. W. L. Abbott; 

 original number 3814. 



Geographic distribution. — Engano Island. 



Diagnostic cliaracters. — Intermediate in characters between Sus 

 hahi hali and S. lahi tuancus; nasals long, 140 mm.; and premaxil- 

 lary long, 115 mm., as in the Babi form; nutrient artery groove on 

 frontal long, 39 mm., as in the Tuanku pig; color of tj^pe unkno-vsTi; 

 of a young male, almost entirely blackish. 



Measurements. — ^Type: Condylobasal length, 267 mm.; tip of 

 nasals to lambdoid notch, 293; greatest length of nasals 140; width 

 of nasals at base, 33; greatest length of premaxilla, 115; external 

 nutrient groove on frontal bone (chord), 39; premolar-molar series, 

 99; second upper molar, 16 by 16; third upper molar, 29 by 19. 



Specimens examined. — Skull of an old female, and skin and skull of 

 a young male from Engano Island. 



RemarTcs. — The status of this pig is very unsatisfactory. In 1906, 

 !Mr. Miller was not satisfied to call it Sus hali without a query. It is 

 unhke any other pig on the Barussan Islands or west coast of Sumatra. 

 It seems to be closer to Sus hahi hahi than to S. h. tuancus. What- 

 ever the origin of the Engano pig, it is clearly not the same as the 

 other Barussan pigs and it seems more satisfactory to describe it as 

 a new form than to try to place it \v\ih some other. In his field notes 

 Doctor Abbott writes of the Engano pig : ' ' Pigs are very common in 

 Engano; they are never kept tame. They are said to be descended 

 from some pigs which swam ashore from stranded ship. This was 

 only 25 { ?) years ago. Previously the natives said none existed. " I 

 do not wish to discredit the natives' story of the Engano pigs, but 

 there is no zoologic and geographic reason why pigs should not 

 occur as native animals on Engano as well as on the Nicobars, Sima- 

 lur, and Babi. It is not unlikely that the pigs reached all these 

 outlying islands by human agency. It would seem incredible that 

 they should be the only large animal on so many small islands unless 

 brought by man. Doctor Abbott thinks the natives may have had 

 the stranded-ship story handed down from generation to generation 

 and that the years refer to the observation of the first generation. 



