100 Mr. 0. Thomas on 7ic 



w 



'I'eetli more delicate, the concavities on the posterior side of 

 ]>\ m^, and nr deeper. 



Dimensions of the type (measured on the spirit-specimen) : — 



Head and body 41 mm. ; tail 31 ; hind foot 8 2 ; ear 6*3. 



Skull: condylo-incisive length (to front face of incisors) 15; 

 greatest breadth 6'8 ; height of brain-case 3'-l ; front of 

 incisor to hinder corner of m^ 6"2. 



Ilab. Uganda (probably Entebbe). 



Ti/pe. Female in spirit. B.M. no. 9. 7. 14. 1. Original 

 number 856. Collected by Herr Simon. 



This species shares with C. nana its exceedingly low 

 flattened biain-case, that of the equally small C. hottegi, Thos., 

 being very markedly higher. 



The type specimen of C. nanilla has on one side an extra 

 tooth behind the usual unicuspids of Crocidura^ and so may 

 be said to be a Pachyura on one side and a Crocidura on the 

 other. But the extra tooth is abnormal in shape, not like 

 that of Pachyura, and I have therefore disregarded it in 

 allocating the species to its genus. 



Heliosciurus undulatus dolosus, subsp. n. 



Colour throughout, as compared with typical undulatus, 

 duller and more smoky, the rusty or tawny replaced by 

 smoky grey-brown. Upper surface dark coarsely grizzled 

 grey, the hairs broadly blackish at base, then dull cream- 

 buff, the narrow subterminal rings white. Under surface 

 dull brownish, with a slight buffy suffusion. Front of arms 

 to w-rists and outer side of legs dark grizzled grey like body, 

 inner sides dull brownish rusty ; hands and feet dull grizzled 

 ochraceous. Tail ringed greyish, without (at least at its 

 base) any mixture of rusty, the hairs with 4 or 5 black rings 

 and as many dull whitish ones. 



Size apparently as in true undulatus, but no measurements 

 available. 



Hah. Mafia Island, off coast of German E. Africa. 



Type. Adult male. B.M. no. ^. Q,. 19.3. Collected and 

 presented by Stewart Walrond, Esq. 



This Mafia squirrel is readily distinguishable from true 

 //. undulatus by its generally darker tone and the replace- 

 ment of the rufous colour by dull brownish. It has, in fact, a 

 great resemblance, especially when viewed from below, to 

 some of the members of the //. rufohrachiatus group. It 

 may, however, be distinguished from these by the prominent 

 white ticking of the u{)per surface, the differently coloured 



