Sus verrucosus, Mull. & Sckleg., and Allies. 531 



margins ; in 1362 c they are about 7'5 millim. wide and 34*5 

 millim. long, and terminate near the back end of the nasals, 

 so that they are not situated directly opposite the crests 

 above the canines, but with two thirds of their length back- 

 wards from those crests. In 1362 d these crests are less 

 distinct. Nehring has pointed out the same conformation in 

 a skull of celebensts, and rightly remarks that they call to 

 mind what occurs in Potamochcerus* . The "wart " supported 

 by the crest and the nasal rugosities of verrucosus is, of 

 course, the exact homologue of the similar but much stronger 

 developed horn-like cartilage in the males of Potamochoerus, 

 and I expect that, as in the latter genus, it will be found to 

 be missing in females and young individuals of the verru- 

 cosus group. 



In the foregoing description of the Amboina pig I had 

 continually to point out its close resemblance to celehensis. 

 This is clearly shown as well by the comparative dimensions. 

 In the table of measurements will be found the average per- 

 centage measurements of six skulls of male celehensis, calcu- 

 lated from the absolute dimensions given by Nehring f. By 

 comparing these with the percentage dimensions of amboin- 

 ensis, it wull be seen that there prevails a close agreement in 

 almost all the figures. In absolute size the Amboina skulls 

 agree with the largest of celehensis, the basal length varying 

 in the six skulls of C. (see Nehring) from 234-267 millim., 

 as against 268 and 270 millim. in the two skulls of A. 



The following few divergences between C. and A. may here 

 be pointed out, the more so as the measurements upon which 

 they rest have, for sake of space, been omitted in the table of 

 measurements. 



The canines of amhoinensis appear to be a little larger ; 

 the longest diameter in the alveoli of the upper canines in C. 

 varying from 17-21 millim. (percent. 7'3-8), in A. from 26"5- 

 29 millim. (percent. 10-10" 7). The lachrymals, too, are 

 shorter in celehensis : — 



A. 0. 



Percentage dimensions of lower margin of 



lachrymal 89- 9-3 6-6- 7-1 



Percentage dimensions of upper margin of 



lachrymal 15-5 11-9-12-8 



Contrary to the opinion expressed by myself, Lydekker 

 has endeavoured to show that in the form of the cranium 

 Sus vittatus comes nearest, amongst living forms, to the 



* ' Ueber Sus celebemis und Verwandte,' p. 10. 

 t L. c. p. .'30. 



