Clirotopterus, Sciuvus, Neacomys, &c. 309 



Hah. Paraguay and Southern Brazil. Type from Concep- 

 cion, Paraguay; alt. 300 m. 



T^pe. Adult male. B.M. no. 1. 3. 11. 1. Collected 6th 

 May, 1900, by Mr. J. Insley. Several specimens also 

 obtained in Paraguay by Mr. W. Foster. 



The diiierences above described in the amount of white 

 on the tips of the wings and in the distribution of the fur 

 seem to be so constant as to indicate a local difference 

 between the specimens from Guiana and Southern Brazil. 

 I have seen no examples from Mexico, whence came Peters's 

 type, but in his most careful and detailed description he 

 mentions no white at all on the tips of the wings, nor is any 

 shown in the plate, and I therefore conclude that the Mexican 

 C/irotojJferus is again different from either of the two races 

 now described, as was indeed to be expected. 



The specimen described and figured by Tomes in 1861*, 

 and recently acquired with the Tomes collection, proves to be 

 the southern form^ with but little white at the ends of the 

 wings. 



Sciurus Boothice annalium, subsp. n. 



General characters as in S. Boothice, but belly grey instead 

 of white. 



Colour of body above as in true Boothiw, but less heavily 

 blackened. Under surface and inner sides of limbs uniformly 

 dull grizzled greyish (between "drab-grey^' and "hair- 

 brown "), not defined laterally from the colour of the sides. 

 Ears with a narrow black edging ; the small patch behind 

 their posterior bases dull greyish white. Upper surface of 

 hands and feet black. Tail-hairs black, annulated along the 

 middle line below with dull whitish, and tipped witli white, 

 but less broadly than in true Boothia'. 



Skull as in true Boothice. 



Dimensions of the type (measured in the skin) : — 



Head and body 250 mm.; tail 250; iiind foot, s. u. 51, 

 c. u. 55 (the second specimen larger : hind foot, s. u. 57, 

 c. u. 61). 



Length of upper tooth-row, exclusive of small premolar^ 10. 



Hab. Honduras. 



Type. Female. B.M. no. 45. 8. 5. 12. Collected by 

 D. Dyson. Two specimens. 



These specimens are those referred to by Gray in his 

 second description of S. Booihice'\, but are so markedly 

 different, by their greyish bellies, from the type and from a 



* P. Z. S. 1861, p. 102, pi. xviii. 



t Ann. & Mag. Nat. Hist. (3) xx. p. 424 (1867). 



