1890.] COLLECTED BY DR. EMIN PASHA. 447 



11. SciTTRUs PALLiATtrs, Petets. 



a, 6, c. Monda, Nguru Mountains. 



12. SciTTEUs RTJFOBBACHiATUS, Waterh. 



a. ?. Buguera. 29/3/89. 



" Iride i'usco-umbrina. Common in the thick forest on the hUl- 

 eides."— E. 



13. SCIURUS PYRKHOPTJS ANERYTHRUS, SUbsp. UOV. (Plate XL.) 



a. (S . Buguera. 14/3/89. Ti/jje of variety. 



b. 2' Buguera. 31/3/89. 



" Iride fusca. On trees near watercourses." — E. 



For differential characters see below. 



Dimensions of a, an adult male in skin : — Head and body 185 

 millim. ; tail, without terminal hairs 167, with hairs 196 ; hind foot, 

 without claws, 40. 



The numerous and well-defined colour-variations found in Sciurus 

 pyrrhopus, and commented on by Dr. Jentink in his admirable 

 monograph of the African Squirrils \ have always appeared to me 

 to be of somewhat more than the merely individual value assigned 

 to them by that author, and on laying out the Museum series of the 

 species, 20 in number, I find that the variations are so strictly 

 geographical in their occurrence that they deserve recognition by 

 name. 



The following are the geographical races that I would propose to 

 recognize, with short notes on the characters which distinguish them 

 from one another. The specific characters of the whole are given 

 in Dr. Jentink's paper : — 



A. S. pyrrhopus leucostigma, Temm. 



Rufous extending all along sides, on cheeks, flanks, and outer 

 sides of limbs. Pale lateral line shown up by the darkening of the 

 hairs just external to it, the latter forming in some specimens a 

 distinct blackish line. BeUy pure white. 



ffab. Eegion north and west of the Bight of Biafra. 



B. S. pyrrhopus erythrogenys, Waterh. 



Rufous duU, confined to cheeks, none on flanks or limbs. No 

 darker line on sides. BeUy white. 

 Hab. Island of Fernando Po. 



C. 8. pyrrhopus tyjncus, F. Cuv. 



Rufous very brilliant, present on face and cheeks, fore and hind 

 limbs, not on flanks. Belly white, often washed with rufous. 



Hab. Gaboon and eastward through the great Congo Forest to 

 Monbuttu, Central Africa^. 



1 Notes Leyd. Mus. iv. p. 1 (1882). 



- The type of this form was said to have come from Fernando Po, but as it 

 had been kept alive as a pet, it may easily have been taken to the island by 

 natives before it came into the hands of the French naturalists. All of the five 

 Fernando Po specimens in the British Museum are of the erythrogenys variety. 



