586 



PROF. W. RIDGEWAY OX THE 



[May 11, 



8. Daniell's duagga. — The illustration (text-%. 1 79, p. 585) is 

 a reduced facsimile from the drawing by Samuel Daniell in his 

 'African Scenery' (1804-8), no. 15. The picture has been 

 reproduced and discussed by Mr. Pocock (Ann. Mag. Nat. Hist., 

 Nov. 1904). 



9. Cornwallis Harris's Cluagga (text-fig. 180) is a reproduction 

 of Harris' drawing in the ' Portraits of the Game Animals of 

 Southern Africa ' [supra, p. 567). 



Text-fis. 180. 



From Cornwallis Harris' drawing. 



This survey of the extant skins and the pictures of the Quaggas 

 of Orange River and Cape Colony, and the comparison of the 

 illustrations with those of the Burchelline Zebras, leads irre- 

 sistibly to the conclusion that every area has its own variety due 

 to environment, that we must be slow to make new species or even 

 subspecies, and that Mr. Pocock Avas right in maintaining that 

 the Quaggas of Orange River and Caj)e Colony were not specifically 

 distinct from the Burchelline Zebras. 



3. Contributions to the Study of tlie Equidpe ; iii. On a 

 portion o£ a fossil Jaw of one of the Equida?. By 

 Prof. William Eidgeway, M.A., Sc.D., F.B.A., LL.D., 



Litt.D.* 



l_Received April 21, 1909.] 

 (Text-figure 181.) 



By the kindness of Mr. A. C. HoUis, secretary to the High 

 Commissioner of British East Africa, through my friend Mr. C. 

 W. Hobley, C.M.G., Assistant-Commissioner at Nairobi, I am 



* Communicated by Dr. P. Chalmers Mitchell, M.A., F.R.S., F.Z.S. 



