44 
REPORT ON ZOOLOGY, MDCCCXLII : 
notus, Natt. Further researches have since shown, that the Sc. cestuans, 
found in the southern part of Brazil, has a representative in the north- 
west part, which is distinguished by the ochre colour of its throat, and 
on this account, has been named by us Sc. gilvigularis. Gray’s Sc. Bel- 
cheri is from Columbia ; black, minutely dotted with bright yellow ; 
sides of head and outside of legs more orange ; feet bay ; edge of eyes, 
and under side of body, bright orange ; lips and throat paler ; along the 
sides of the body a black streak between the two colours ; whiskers black ; 
ears hairy, slightly pencilled; tail flat, rather narrow, black and red 
varied, with long white tips to the hairs ; body 7^"; tail (Ann. x. 
p. 263.) Gray also mentions another species, habitat unknown, Sc. splen- 
didus, — of the size of English Squirrel, but brighter red ; hair uniform 
red-bay to the base ; head rather paler ; cheeks and chin still more so ; 
belly, and inside of the legs as far as the wrist, pure white ; whiskers and 
tuft of hairs on the temples black ; ears rather naked ; tail flat, two-rowed, 
bright red, with hair of one colour to the base. Gray describes, with an 
interrogation if from India ? a Xerus trivittatus (Ann. x. p. 264) ; dark 
brown, minutely grisled with grey ; outer sides of the limbs with longer 
brown hair ; broad streak on each side of back, belly, cheeks, lips, throat, 
lower part of sides and inside of limbs, white ; a narrow streak on the 
middle of the back grey-brown; tail broad, hair whitish, with three 
broad black bands. 
Pteromys has also had a considerable addition to its species. One 
from Africa, where none of them had been previously known, is impor- 
tant to the knowledge of their geographical distribution. Gray has de- 
scribed three species from the Old World (Ann. of Nat. Hist. x. p. 262). 
1, Pteromys derhiavms ; blackish-brown, grey grisled; hairs dull black 
brown with whitish tips ; shoulders whitish ; tail and feet black ; tail 
round ; belly and inside of limbs greyish-white ; head above and below 
blackish-grey ; body 14" : Sierra Leone, Mr. Whitfield. 2. Sciurop- 
terus caniceps ; blackish-brown, varied with red bay ; hairs long, dark 
blackish, with red bay tips ; outside of the legs redder, beneath reddish- 
yellow ; head iron grey with longer black interspersed hairs ; throat 
white ; chin black ; tail flattish, black, with some reddish-tipped hairs ; 
body 9" ; tail Sent with the following, by Pearson, from Dargellan 
(India). Another specimen is about ^d. smaller; pale above and below; 
head coloured like the back. Either a young one or new species, which 
in the latter case, should be named Sc. Pearsonii. 3. Sciuropterus 
nohilis ; bright chestnut brown, with yellow tips to some of the hairs ; 
pale rufous beneath ; the top of the head, shoulders, and a narrow streak 
down the middle of the upper part of the back, pale fulvous. — Bach-, 
man’s Pteromys oregonensis comes from the Pine Woods on Columbia 
River, and is minutely described in the Journal of Philadelph. viii. I, 
p. 101, It is of medium size, between Pt. volucella and sabrinus ; 
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