Descriptions of East Asiatic Mammals 221 
through a number of other representative races : hendeei in the 
mountains of Tonkin, rubeculus in peninsular Siam and youngi 
in Pahang, Malay Peninsula ; in Burma occur gordoni of upper 
Burma, kinneari of the upper Chindwin River, crotalius of the 
lower Chindwin and hyperthrus from Tenasserim, while in the 
Jaintia Hills, Assam, are found the forms wellsi, aquilo, and 
nagarum (both from Sadiya), intermedins and punctatissimus 
(from Cachar). All of the foregoing are races of erythrczus, to 
which they bear a close general likeness. 
Besides the races of erythrczus already described, at least nine 
full species of Callosciurns are members of the Red-bellied 
Squirrel group, even though the underparts of many are not 
red. These include C. flavimanus of Annam, C. sladeni of 
Burma, C. ferrugineus of Siam and Cambodia, C. cockerelli of 
northern Siam, C. finlaysoni of Siam, C. bocourtii of Siam, 
C. atridorsalis of Siam and lower Burma, and C. griseimanus of 
Annam, Cambodia, and Cochin-China. 
The Yellow-handed Tree Squirrel, Callosciurns flavi- 
manus, has the upper surface and the limbs grizzled gray and 
the underparts maroon-red. The hands and feet, muzzle and ears 
are buffy yellowish. The tail has the tip buffy. There is no mark 
on the flank. The length of the head and body is 9 inches, of the 
tail 8 inches, of the hind foot slightly less than 2 inches. Lost 
sight of since it was described in 1832, this species was redis- 
covered about 1927 by Delacour at Col des Nuages, central 
Annam. Its general distribution includes the central hills of 
Annam and parts of Laos. Several additional races of this 
Squirrel are now known : C. f. dactylinus from Dakto, south of 
Hue, Annam, and C. f. contumdx from Kontoum, 30 miles 
farther south than Dakto, both regions of the Annam plateau 
at 3000 feet. From Hue, Annam, and Nape, Laos, comes the 
race 6\ /. pirata, and C. f. bolovensis is from Bolovens Plateau, 
southern Laos. There is yet another form, C. f. quantulus, from 
Laos and Annam. 
