African tmall Mammals. 107 



rin;,'-? on t!ie dorsal h;iira bein;^ about \'2 mm. In breaJth as 

 compared with a!)out 1*8 mm. in that animal and in the typical 

 ochraceus. Light lateral stripes barely perceptible. Tliroat 

 whitish. Foot ot* same f^reyi.-*h buff as in salutuns. Tuil- 

 hairs tipped with whitisii or creamy instead of ociiraceous 

 buff. 



Skull and teeth as in P. o. aalutans, 

 Dimensions of the type : — 

 Hind foot 38 ram. 



Skull : greatest length 88".3 ; condylo-b:u!al length 35*6 ; 

 upper tooth-row, exclusive of/)', 6'o. 

 Hdb. Eli,'t'Vo, Brit. E. Africa. 



Tiipe. Adult male. B.M. no. 99. 8. 4. 58. CJollected 

 1st August, 189G, and presented by F. J. Jackson, Esq., C.B. 

 This inland form has but little trace of the light lateral 

 band characteristic of P. ocAraceM5, but its whitish throat shows 

 its relationship to be with that species rather than with 

 P. aruscen»i^. 



It may be noticed that in the closely allied unstriped 

 species P. aruscensis, Pag., there is a distinct seasonal change 

 of colour, specimens killed February to April being a much 

 greyer colour than those killed in the latter half of the year. 

 A specimen from Mt. Elgon killed in February agrees in 

 every detail with some from near Mombasa killed at the same 

 date, while others from the latter region killed in July are 

 as dark in colour as August specimens from Kilimanjaro. 

 The change is probably due rather to the bleaching of the 

 ochraceous ends of the hairs towards whitish than to any real 

 difference in the colour of the hairs when first erupted. 



The variation in the size of the teeth, especially of p*, in 

 these squirrels is very noticeable. It seems to be partly 

 individual, and partly due to Jige, the oblique wearing of the 

 teeth causing them to appear of much greater diameter in old 

 specimens. 



Beamys, gen. nov. 



External characters murine. Claws small. Feet short. 

 of medium length, practically naked, very finely ringed. 



Skull in gener«l outline somewhat like that of Saccostomus , 

 but very different in details. Supraorbital edges square, not 

 ridged. Anterior zygomatic plate scarcely developed, its 

 front edge slanting. Palatal foramina short and narrow, 

 their posterior end barely behind the level of the front edge 

 of the zygomatic plates; in Saccostoviua the latter comes 

 opposite the middle of the foramina. Posterior edge of palate 



8* 



