hitherto classed under S^-. finlaysoui, llorsf. 399 



(7) Sciurus hocourti, A. M.-Edw. 



1867. Sciurus bocourti, A. M.-Edwards, Rev. Zool. p. 193. 

 18(')7. Sciurus leucogastcr, A. M.-Edwards, Kev. Zool. p. 196. 

 1901. Sciurus leucocephalus, Bouliote, P. Z. S. p. 54. 



The type-locality of S. hocourti was Ayuthia, on the river 

 north of Bangkok. 8. leiicogaster came from " Pexabury," 

 close to Bangkok, and is evidently a young individual of this 

 specie.''. The Museum lias a long series from Ayuthia, collected 

 by Capt. 8. S. Flower, and others from various points on the 

 river still further north, and some from tiie Me Nam feedtr 

 as far north as Pichit, collected by Mr. T. H. Lyle, 

 bayond which point it is replaced by the next form. It is a 

 form which varies extiaordinarily in colouring. Milne- 

 Eduards gives the ground-colour as " un fauve roux et 

 noiratre'^ ; in a series of over twenty specimens I tind all 

 grades of colour, from almost black, through " seal-browu " 

 and " chocolate," to a quite pale " smoke-grey," in all cases 

 grizzled witli pale buff. The under surface is white, but in 

 certain individuals this extends to the feet, in others to the 

 face and head also, and in yet others the tail has become 

 white. Finally, in the series from Ayuthia are two abnormal 

 individuals in which white is entirely absent, even the belly 

 is chestnut. These specimens approach the form next 

 d(!scribed, except for tlie absence of the subbasal pale spot on 

 the tail which so constantly characterizes the latter. 



Dimensions of an adult male : — 



Head and body 192 mm. ; tail 198; hind foot 45 ; ear 20. 



Skull : greatest length 50 ; basilar length 39 ; zygomatic 

 breadth 31 ; brain-case breadth 23 ; interorbital breadth 18*5; 

 nasals, length 15, breadth proximally 3'5, breadth distally 7*7 ; 

 diastema 11'2 ; upper molar series lO'O. 



(8) Sciurus hocourti sinistralis^ suhsp. u. 



Slightly smaller than typical hocourti. 



General colour above black or " clove-brown,-" grizzled 

 (finely) with buff, with a certain number of all-white hairs 

 sprinkled over the back. Face, including the ears, suffused 

 with bright " hazel." Under surface near " hazel " ; hands 

 and feet dark, almost black. Tail for a short distance 

 (30 mm.) coloured like back, then for some distance (45 mm.) 

 aiuiost white (the hairs white, with black tips), the rest of 

 the tail bright " bay," an obsolescent black and buff barring 

 iitill traceable at the ba.ses of the hairs. 



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



