216 ]\Ir. 0. Thomas on the 



well-dt^velopocl "spectacles." Its skull, fii>:ui-etl by do Blain- 

 ville, is, on the stated proportion of §, 18iJ niillim. in lenf]jtli 

 from condyles to gnathion, and therefore clearly, even though 

 rather young, one of the smaller forms. 



But the spectacles by themselves prove to be a character of 

 no value, one specimen in the Museum even having one eye 

 ringed and the other not ; and on this account Tschudi's 

 unspectacled U7'sus frugihgus cannot be distinguished from 

 U. ornatus, or at least from whatever form of the group 

 proves to occur in Central Peru, where he first obtained it. 

 For the first mention * of Tschudi's bear is apropos of the 

 " Urwald " of Eastern Central Peru, and the Cosnipata skulls, 

 being from the same faunal district, may well be considered 

 to represent that form, which would thus be synonymous 

 with ornatus. 



In 1568 t Sclater described a bear as Ursus nasutus which 

 in 1898 \ he thought might be that of Colombia, forgetting 

 that in 1871 § he had stated, on the authority of Mr. Busk, 

 that this bear was referable to U. nmericanufi. An examina- 

 tion of the typical skull, now in the Museum ||, shows that 

 Mr. Busk was quite right, and that U. nasutus was not a 

 Tremarctos. 



This leaves the larger northern form without a name, and 

 in honour of my friend Dr. C. I. Forsyth Major, to whose 

 assistance I have been so constantly indebted, in this as in 

 other matters, I would propose to call it 



Tremarctos ornatus Majori\ subsp. n. 



Size comparatively large. Colour uniformly black all 

 over, except the muzzle, which is dull whitish, and there are 

 some indistinct whitish marks on the throat. 



Skull as compared with that of U. ornatus larger (see 

 measurements below), longer, and more slender when viewed 

 from above^ higher and more convex in lateral profile, and the 

 whole aspect less like that of the Malayan bear. Zygomata 

 less widely expanded. Frontal very convex u|)wards, espe- 

 cially just opposite the orbits. Interorbital region long and 

 narrow, the orbito-temporal fossas proportionally long. Occi- 

 pital region high and narrow, instead of broad and low. 

 Palate much longer, but of about the same width. Posterior 

 narial opening broader. Basioccipital very broad between 

 bullae. Lower jaw large and powerful, and of the peculiar 



« ' Peru : Reiseskizzen,' ii. p. 209 (184G). 



t P. Z. S. 18b8, p. 71. 



t Ibid. 1808, p. 2. 



§ Ibid. 1871, p. 232. 



II B.M. 1531 a, 6d. 10. 19. 19. 



