CAXIS PAEVIDENS. 77 



Brazil, which show dental characters remarkably distinct from all the 

 forms which we have grouped with our C. azarte, but which remarkably 

 agree with those depicted by Burmeister as pertaining to his C. vetulus. 

 The skins also fairly resemble the same form, and therefore we are 

 disposed to regard the specimens in tlie Museum as belonging to the 

 same species as named cefu/us by Burmeister. That species of Bur- 

 meister, however, was anonymous, and therefore we employed the new 

 name jOflm</e«s to denote the British-Museum specimen, which must 

 retain that name even if it should turn out that Burmeister's species is 

 different and needs yet another designation, which, however, we are not. 

 inclined to believe. 



There are no particulars recorded of the specimen which is our type, 

 save that it was brought from Brazil in the year 1S44. Burmeister 

 also was unable to give any particulars of the specimen which he 

 obtained from Campos. 



The type is represented on our Plate XVIII. 



In colour this species is yellowish grey, slightly darker on the back ; 

 but the dorsum of the tail is not darker, save a small black spot near 

 the root. The end of the tail is black. The top of the head is grey 

 like the sides of the body. The ears, externally, are of a darker grey, 

 but reddish ochre towards the base and on the dorsum of the head 

 adjoining the roots of the ears. The limbs are rufous on the hinder 

 aspect of each. The underparts of the body are of a yellowish white, 

 the fur of the throat being the whitest. The white throat is separated 

 from the yellowish white of the ventral part of the body by a yellow 

 patch, interposed on the front and under surface of the chest. The 

 under surface of the lower jaw is dark. The lips are not white, and 

 there is no distinct spot between the eye and the nose. There is a 

 paler greyish patch obscurely indicated on either shoulder. The hairs 

 of the sides of the body are yellowish below, white towards the tip. 

 The hairs of the back are yellowish below and then white, but they are 

 black towards the tips. The hairs of the black terminal portion of the 

 tail arc rufous-grey towards the root. The hairs of the thighs are 

 yellowish below but with whitish tips. About the heel the hairs are 

 dusky below, but yellowish red towards their tips. 



