West African Forms ^)/ Ilcliosciiims lufoljiacliiiini. ^)2'.) 



Dimensions iiboiit as in carrathcrsi. \V\nA foot ('li}) 

 48 mm. 



Hah. Wabenibe region, wc.^t of the noitli end of Lako 

 Tan<^an}ika. 



Type. Adult male. B.M. no. 22. 3. 3. 3. Original 

 number 23. C'ollected by li. Grauer. One specimen. 



This beautiful squirrel is readily distinguishable t'rom true 

 carruthersi by its yellow-washed under surface. 



It would seem to be tlie representative of that animal on 

 the Belgian Congo side of Lake Tanganyika. 



LTV. — The West African Forms o/IIeliosciurus rufobrachium. 

 Jjy Oldfield Thomas. 



(Published by permission of the Trustees of the British Museum.) 



In connection with tlie determination of Mr. Willoughby 

 Lowe's Ivory Coast squirrels, I have found occa.->ion to lay 

 out the whole of our West xifiiean specimens of the rufo- 

 hrachium group. These are sufficient to give a fair idea of 

 the forms found in West Africa west of the Cameroons, and 

 appear to show that the recognizable forms are eight in 

 iiumber. 



It is curious that on the Gold Coast, and north of it, two 

 brightly coloured forms occur which shut oti the dull-coloured 

 Sierra Leone and Portuguese Guinea animals from the 

 similarly dull-coloured forms found in Nigeria and eastwards. 



Commencing in the furthest north-west, we have : — 



1. Ileli'osciurits rufuhrachium caurinus, subsp. n. 



General colour of average intensity, near " raw umber," 

 chest and belly washed wilh whitish; forearms and inner 

 sides of thighs little reddened ; hands and feet grizzled buti'y 

 and white, tail washed with wliitish. 



Length of type-skull 52 mm. 



JIab. Portuguese Guinea ; type from Gunnal ; alt. 50 m. 



'Ji/pe. Adult female. B.M. no. 10. 4. 9. 6. Original 

 number 13. Collected 2ud June, 1909, by Dr. AV. J. 

 Ansorge. Four sjjecimens. 



2. Ileliosciurus rufobrachium leonensis^ subsp. n. 



Like caurinus, but more strongly coloured throughout. 

 Bi.ck darker, under surface more less or washed with 



34^ 



