776 JOURNAL, BOMB AF NATURAL HIST. SOCIETY, Vol. XXVIL 



the genus Callosciurus, wliicli I take this opportunity of doing, as 

 follows : — 



*Key to the forms of the genus Callosciurus. 



A. — As in Summary, 

 i^.— Feet dark. 

 a. Face coloured differently from the rest of the head. 

 a'. Darker. Belly bay .. ..{9h) hhutanensis, Bonh. 



&', Paler. Belly grizzled .. ••(7) cn«mpi, Wrought 

 h. Face coloured like the head. 

 al. Self-coloured above and below . .(3) ferrugineus, Cuv. 

 b'. Coloured differently above and 

 below. 

 a". Black splashes or stripes on 

 back. 

 a'". Underside maroon or bay ..(4) atrodorsalis, Gray. 

 &'". Underside like flanks, wash- 

 ed with yellow . . • • (5) atr. shanicus, Eyley. 

 h" . No black dorsal marks. 



a'". Underside with a medium 

 grizzled line. 

 a"''. Ground colour of belly 



rufous . . . . . .(11) gordoni, And. 



h"" . Ground colour of belly 



white .. .. . .{12) quinquestriatus, And. 



V" . Underside unicoloured. 

 a"" . A buffy mark on should- 

 er and base of neck . . (8) epomophorus davisoni, 



Bonh. 

 h"". No mark on shoulder or 



neck . . . . . . . .(9) erythrceus group. 



Key to the forms of the erythrceus group. 

 A. — Ears red or brown. 



a. No white tail-tip . . . . . . (9a) erythrceus erythrceus, 



Pall. 



b. A whitish tail-tip. . . . . (9i) erythrceus wellsi. 



Wrought. 

 B. — Ears coloured like the rest of head. 



a. Colour very dark, almost black. 



a'. Grizzling coarser .. . .{9 c) erythrceus erythrogaster, 



Bly. 



b . Grizzlmg very fine . , . . {9d) erythrceus puncta- 



tissimus. Gray. 



b. Paler. 



* I have retained the numbers before the names as used in the Summary in 

 order not to destroy the connection with the corresponding numbers under Distribu- 

 tion. 



