268 MESSRS. OLDFIELD THOMAS AND M. A. C. HINTON ON 



dark, the liglit lines dull whitish, with a distinct tendency 

 to break into spots. Under surface buffy whitish, the bases of 

 the hairs broadly slaty, except on the chin. Ears dull ochraceous, 

 a richer ochraceous tuft at their anterior base. Hands and feet 

 dull bufFy whitish. Tail black above, dull buffy whitish below. 



Skull ^vith distinctly smaller buUte than in L. dunni. 



Dimensions of the type (measured in the flesh) : — 



Head and body 112 mm. ; tail 125 ; hind foot 25 ; ear 17. 



Skull : greatest length 29 ; condylo-incisive length 26"6 ; palatal 

 foramina 5*1 ; bulla 5 ; upper molar series 5'3. 



Hah. Jebel Marra, at various altitudes, from 7000' upwards to 

 the crater. Type from Central Jebel Marra on v/estern slope, 

 8000'. 



Type. Adult male. B.M. No. 23. 1. 1. 313. Original number 

 617. Collected March 22, 1921. 



This distinct mountain species is readily distinguished by its 

 comparatively long soft fur, which is practically without spines, 

 in marked contrast with both L. dunni and zebra. Also by the 

 slaty bases to its belly-hairs and by its small bullje. 



On freshly-killed specimens the attention of both collectoi's was 

 specially attracted to this animal by the greenish iridescent 

 sheen on its fur, though, as with so many mammals, this sheen 

 fades away in the dried skin. 



We have much pleasure in naming this well-marked species 

 in honour of Admiral Lynes, to whose enthusiasm and scientific 

 spirit the National Museum owes the present magnificent acces- 

 sion to its collections. 



50. Gbammomys aridulus, sp. n. 



cS . 826. Kulme, Wadi Aribo. 3300'. 



An unusually pallid, desert-coloured species. 

 General colour of dorsal surface dull ochraceous lined with 

 tlark brown, brightest and clearest upon the flanks and rump. 

 At the rump the tint is near Ridgway's " ochraceous-tawny." Top 

 of head and nape duller and greyish. Region between eye and 

 ear on each side gre3^ A small white patch behind each ear. 

 Ears bright ochraceous tawny within and without, save for a mar- 

 ginal band of dark reddish brown extending from the base of the 

 proectote to the tip of the ear. Underparts cream, in sharp 

 contrast with flanks. Outer surface of forearms and upper 

 surfaces of hands and feet cream-buff. Tail bicolored, dusky 

 above, whitish below. 



Skull most nearly resembling that of G. huntingi, described 

 from Liberia, in form, but distinguished chiefly by its larger 

 bullae and heavier molars. 



Dimensions (measured in the flesh): — 



Head and body 115 mm. ; tail 175 ; hind foot 24; ear 18. 



Skull: condylo-incisive length 26-6; extreme length 29'4; 



