Geographical Races of the Woolly Opossum. 359 



These animals all vary a good deal in their coloration; as 

 indicated by Dr. Allen, and the distinctions given must be 

 looked upon as average ones. Enough specimens have, 

 however, been examined to show that then - average characters 

 are sufficiently constant locally to be used for the distinction 

 of the different subspecies. 



The following are the descriptions of the new forms : — 



Philander laniger aztecus, subsp. n. 



Colours brightly contrasted. General colour rich ferru- 

 ginous. Crown grey to behind level of ears. Withers-streak 

 large, white, prominent. Rump and outer sides of hips grey 

 all across, the grey also passing on to the hairy part of the 

 tail. Forearms and wrists prominently white. Hind legs 

 ferruginous. Under surface and inner side of limbs buflfy 

 whitish, the hairs not darkened basally. 



JIab. (of type). San Juan de la Punta, Vera Cruz, Mexico. 

 Another specimen from Teapa, Tabasco. 



Type. Adult female. B.M. no. 94. 12. 18. 28. Received 

 from the Museo Nacional, Mexico. 



Distinguished from the otherwise rather similar Ph. I. pictus 

 by the grey of the rump not being interrupted mesially and 

 by the rusty-coloured hind limbs, these being in pictus 

 whitish like the anterior pair. 



Philander laniger fervidus, subsp. n. 



Colours very deep and strong throughout. General colour 

 rich cinnamon-rufous, the lighter markings yellow instead of 

 grey. Head yellow to level of ears. Withers-mark well 

 developed, strongly contrasted, buffy yellow. Under surface 

 pale buffy yellow, the belly tending more towards ferruginous. 

 Fore limbs to wrists buffy yellow. Hind limbs deep ferru- 

 ginous. Naked part of tail wholly dark brown to end. 



JIab. Guatemala. 



lg/e. Adult female. B.M. no. 6. 10. 22. 1. Collected 

 by J. Rodriguez. Presented by F. DuCane Godman, Esq. 



The dark colour of the tail is unique in the group, but is 

 paralleled among some of the species of Metachirus. li- 

 very rich ferruginous colour and the yellowness of the light 

 markings — whitish grey in other forms — will rca lily distin- 

 guish this handsome animal from all its allies. 



Philander laniger nauticus, subsp. n. 



Most nearly allied to Ph. 1. pallidas, to which it has been 

 hitherto referred, but the brown colour usual in the members 



