Sus verrucosus, Mull. & Schhg., and Allies. 529 



the other skull from Amboina as belonging to S. vittatus *. 

 This is the same skull which, as pointed out above, is figured 

 in profile in the ' Hand-list,' with the insciiption A ulacochoer us 

 vittatus f. 



Whilst mindanensis approaches j)'hiUppensis, the present 

 Amboina form is more closely related to celehensis, so as to 

 agree with the last in all the characters in which j)hilippensis, 

 according to Nehring J, departs from it ; the agreement is 

 closer still than between jyhilippensis and mindanensis. 



The skull of amboinensis, then, is higher and broader tlian 

 phili-ppensisj and still more so than mindanensis. Whilst 

 the basal length of the latter form is equal to that of the 

 Amboina wild pigs (M. = 269, A. = 270 . 268), the united 

 parietals and frontals are considerably longer in A. (164 . 169, 

 M. 149), whereas the nasals are much shorter (A. 153 . 155, 

 M. 164). Taking philippensis into account as well, the per- 

 centage lengths stand thus : — 



M. P. A. 



Parietals and frontals 55-4 58-7 . 57-3 6074 . 63 



Nasals 61 606 . 57-3 567 .57-8 



The postorbital region is not only high in amhoinensis, but 

 it is elongate as well. Dividing, after Nathusius's method, 

 the upper surface of the cranium proper in two parts, by 

 means of an auxiliary frontal line connecting the postorbital 

 processes across the forehead, we find the following propor- 

 tions in the lengths of the two parts : — 



M. A. 



Percentage from root of the nose to frontal line .... 24"3 22'4 . 237 

 Percentage from frontal line to occipital margin . , 32 39*2 . 41 



This is one of the characters in which mindanensis 

 approaches more closely S. verrucosus from Java, and still 

 more the Sus verruc. ceramicus from Ceram (see below) ; 

 wlioreas in the following it is, as we have seen, at the one 

 extreme, verrucosus^ with its very short snout, at the other, 

 whilst amboinensis holds the middle : — 



* L. c. p, 270. In tlie same place measurements are given of the 

 lachrymal of an immature skull of ^' iSus vittatus," Brit. JNlus. 1'"'62/, 

 which in reality is a young *S'. verrucosus ; and so is the skull 1362 ff 

 enumerated in the Catalogue (Cat. Caruiv., I'achyd. &c. p. 3;}2 ; Hand- 

 list Edent. Mamm. p. o8) as <S'. vittatus ; " Sus timorietisis," 1501 c, from 

 Macassar (Cat. Caruiv., Pachyd. ilvc. p. 335 ; Hand-list Edent. Mamm. 

 p. 60) is the skull of a young of iS. verrucosus celehensis. 



t PI. xxiv. fig. 3. 



X The celebensis of North Celebes, however, differs less from philippen- 

 sis, according to Nehring (' Ueber Sus celebensis und Verwandte,' p. 15). 



