48S Mr. R. C. Wrougliton on 



(14) Tatera valida. 

 Gerhillus validus, Boc. J. Sc. Math. Phys. Nat. Lisb. pt. v. p. 6 (1890). 



92.1.9.10. Caconda, Angola. Cotvpe in al. (Lisb. 

 Mus.). 



4.4. 9. 46-47. Duque de Bragancja, Angola {Amorge). 



87. 12. 1. 48-49. Monbuttu [Emin Pasha). 



Bocage based his species valida not on one but on several 

 specimens from different localities. His description gives 

 the body-measnrements of an individual from the Rio Cuando 

 and the skull-dimensions of one from Caconda. He states 

 that the tail is always shorter than the head and body, but 

 this must be due to his method of measurement. The cotype 

 and Dr. Ausorge's specimens show that^ as the dimensions are 

 now taken, the head and body and the tail are practically equal 

 in length. These Bragan9a specimens^ while agreeing in all 

 main characters with the cotype and Bocage's description, 

 differ a little in being much less " rembrunies^^ and having 

 the skull somewhat longer and narrower and the bullae some- 

 what smaller; but the coarse broad molars and the stout, 

 scarcely grooved upper incisors prove them to belong un- 

 doubtedly to this species. 1 venture to record the normal 

 dimensions of this species as : — 



Head and body 160 mm. ; tail IGO ; hind foot 36 ; ear 20. 



k^kull : greatest length 41 ; basilar length 34; zygomatic 

 breadth 22; length of upper molar series 6'5 ; bullae 11. 



Emin Pasha's specimens from Monbuttu I have placed 

 here provisionally. In coloration they agree with valida 

 even better than the Angola specimens, but seem to be 

 smaller, and the skull is even shorter and broader than in 

 the " cotype " of valida. 



(15) Tatera angolde, sp. n. 



5.5.9.34-39. Fort Quilenges, Angola (Ansorge). Alt. 

 3100'. 



4. 4. 9. 48. Pungo Adongo, Angola {Ansorge) . Alt. 1200'. 



92. 1. 9. 11. Rio Coroca, Angola (Lisbon ^luseum, in al.). 



A much smaller species than its compatriot valida. 

 Ground-colour above a sandy buff, grizzled with black ; 

 under surface pure white ; tail above same colour as back, 

 below dirty white. Koimal dimensions: — 



Head and body 145 mm. ; tail 150; hind foot 31 ; ear 20. 



Skull: greatest length 30; basilar length 27; zygomatic 

 breadth 20; length of upper molar series 5'3 ; bullae 10. 



