Dendromus, Dipodilliis, and Gerbillus. 63 



11*2 ; intevorbital breatltli 5*2; breadth of brain-case 13'5 ; 

 palatilar leiigtli 12"5 ; [lalatal foramina 5*1 ; upjier molar 

 series 3'5. 



Hdh. Northern Morocco. Type from tlie sea-coast 70 

 niih's (122 kih)metre.s) south-west of 'I'an^iers. 



Type. OKI female. B.M. no. 80. 9. 10. 1. (Jollected and 

 presented by Caj)!. Savile Raid. 



The specimen on wliich this species is founded has Lain for 

 30 years among the series of D. campeslris, to which it has a 

 strong superficial resemblance. But examination of its feet 

 and skull shows that it has really nothing to do with that 

 animal, but reprcsc-nts in Morocco the same type of gerbil as 

 that just described, as D. arabium; it is therufove a form 

 entirely new to the fauna of Barbary. 



Dr. Cabrera has noted that there is a gap in the distribution 

 of D. cam pest ris just in the region where Capt. Savile Reid 

 ca|)tured tliis gerbil. 



Gerbillus calidus, sp. n. 



A pale desert-coloured species allied to G. ^meba. 



Size about as in paeba. General colour above ])ale sandy 

 fawn, not or scarcely darkened on the back. Under surface 

 wholl}^ snowy white, the white rather high up on the sides, 

 and wholly enclosing the fore limbs, on to which the darker 

 body-colour does not encroach. Area round e^^es whitish, 

 not sharpl}' defined ; a small white patch behind ears. Ears 

 pale fawn, like the head, their edges not darkened. Feet 

 wholly white; .'^oles hairy throughout except for a round 

 patch on the heels, and at the bases of the digits just distal 

 to the large compound sole-pad. Tail whitish, tlie u[)per 

 surface a little darker ; the slight terminal crest browner. 



Skull more slender tiiau that of G. i^aeha, the bullae 

 smaller. 



Dimensions of the type (measured in flesh) : — 



Head and body 85 mm. ; tail 99 ; hind foot 24 ; ear 17. 



Skull : greatest length 28'3 ; condylo-incisive length 24*8 ; 

 zygomatic breadth 14 ; nasals 11"2 ; interorbital breadth 5 ; 

 breadth of brain-case 13'3 ; palatal foramina 5*3 ; diagonal 

 horizontal diameter of bulla 8"2; ujjper molar series 4*0. 



An older specimen has a tail 115 mm.; hind foot 25'5 ; 

 greatest length of skull 30; bulla 8"8. 



Hub. (of typi'). Molopo, W. of Morokwen, Bechuaiia-land. 

 Other exampli-s from Otjimbingue, Damara-land {Anderssoii). 



Type. Young adult male. B.M. no. 4. 10. 1. 72. Original 



