363 



Only a single species of Gynogale being described, and that a 

 native of Asia, I thought the different shape and proportions 

 of the tail, with its African habitat, were sufficient to make this 

 the representative of a different genus, for which I proposed the 

 name of Potamogale ; preferring, however, to wait until I 

 can procure the skull and skeleton, I have placed it in the genus 

 Cynogale, to which it certainly bears a close resemblance. 



SciURUs NoRDHOFFi. General color above, on the back 

 black, tipped and ringed with orange rufous, on the head and tail 

 tipped with white ; last two thirds of tail obscurely ringed with 

 black and white, almost hoary below ; anterior limbs outside like the 

 head, hind limbs like the back. Under surface scantily furnished 

 with light rufous hair, grayish toward and on the throat and 

 breast ; inside of limbs light rufous ; abrupt line of termination 

 between the long hair of the sides and the scanty hair of the ab- 

 domen ; feet black ; whiskers long ; teeth deep reddish orange. 

 General character of hair rather harsh. 



Length from the tip of the nose to base of tail, 13 inches ; 

 length of tail, 13^ inches. It is called "Ncongo" by the na- 

 tives. 



I take great pleasure in naming this species in honor of my friend 

 Charles Nordhoff, Esq., of New York. 



This species resembles the aS'. camceps, (Temm.) but has not 

 the lateral whitish band, nor the rufous spot behind the ears, and 

 has, moreover, the lower parts and the inside of the limbs light 

 rufous, and the tail more hoary beneath. It comes near, also, to 

 the *S'. Stangeri, (Waterh.,) from Fernando Po, but has not the 

 abdomen barred with black. 



This squirrel is one of the largest and one of the rarest I have 

 met with in Africa. It is found in the mountainous country situated 

 near the Ashira prairies, at a distance of one hundred and fifty 

 miles from the coast, and one degree south of the equator. 



SciURUS EBORivORUS. General color above shining black 

 and bright rufous, arising from the hairs being black, ringed with 

 the latter and tipped with the former, the rufous on the head 

 becoming whitish. Lower parts scantily furnished with hair, gray- 

 ish on the throat and breast, and brownish on the abdomen ; feet 



