MONOGRAPH OF THE GENUS SCIDRUS. 159 



the basal half of the hair : the upper parts of the body were 

 grizzled with black and white, and many of the hairs were 

 annulated with rust colour ; over the haunches and rump the 

 hairs are annulated with rusty yellow and black ; the hairs of 

 the feet are chiefly black. 



The original specimen on which this species was founded 

 is in the Museum at Paris, and Mr. Waterhouse supplied me 

 with the following description from his own manuscript notes. 



" General colour, grizzled black and white ; throat, chest, 

 belly, inner side of legs, nearly the whole of the fore legs and 

 the fore part of the hind legs rusty red ; tail very broad ; the 

 hairs black, red at the base and white at the apex ; lips white; 

 feet black, with a few white hairs intermixed ; fore part of 

 head also black, with a few intermixed white hairs ; chin 

 blackish in front, shading into grey. 



DIMENSIONS. 



IN. LIN. 



Nose to root of tail 11 6 



Tail to end of hair 11 



Tarsus 2 4j, 



In the Museum of the Zoological Society are three speci- 

 mens, one of which is from Mexico, and the others are, un- 

 fortunately, not named. If they should prove the same, they 

 exhibit considerable variations in colour. In one specimen 

 the chin and throat are grey ; the animal appears to be chang- 

 ing its colour, over the haunches there is a considerable ad- 

 mixture of rusty red colour ; the general hue of the back was 

 deep grey ; the hairs at base plumbeous, the apical portion 

 annulated with first black, then rust colour, then black, vary- 

 ing in some hairs. 



6. Cat Squirrel. Sciurus cinereus. 



Sciurus cinereus; Linn., Gmel. 



Cat Squirrel; B. Penn. 'Arct. Zool.' i. 137. 



Essent. Char. — A little smaller than the Fox Squirrel, larger than the 

 Northern Grey Squirrel ; "body stout ; legs rather short ; nose and ears not 

 white ; tail longer than the hody. 



This species has been sometimes confounded with the fox 

 squirrel, and at other times with the northern grey squirrel ; 

 it is, however, in size intermediate between the two, and has 

 some distinctive marks by which it may be known from ei- 



