260 Letters from Mr. J. Graham Kerr. 



Compared with a Transvaal specimen this bird seems to 

 be absolutely identical. 



Fam. ALAUDiDiE. 



61. Tephrocorys cinerea. 



Tephrocorys cinerea (Gm.) ; Sharpe, Cat. B. Brit. Mus. 

 xiii. p. 561. 

 No. 47. $ ad. Kikuyu, Sept. 10, 1889. 



Slightly darker than South- African examples, with dusky 

 brown ear-coverts and more rufous wings, but I think not 

 separable from T. cinerea. 



62. Mirafra africana. 



Mirafra africana, Sharpe, Cat. B. Brit. Mus. xiii. p. 607 

 (1890). 

 No. 42. ^ ad. Ulu, Ukambani, Jan. 3, 1889. 



Although this specimen is in freshly moulted plumage and 

 looks rather different from South-African examples, I cannot 

 separate it specifically. 



[To be continued.] 



XXIV. — Letters from Mr. J. Graham Kerr, Naturalist to 

 the Pilcomayo Expedition* . 



S.S. ' Bolivia,' Rio Pilcomayo. 



Lat. 24° 50' S. ; Long." 58° 40' W. 

 June 25th, 1890. 



I AM afraid you will be thinking that I have vanished from 

 the face of the earth, it is so long since I have had an oppor- 

 tunity of writing to you. As a canoe is being sent down the 

 river for provisions, I take the chance of sending you a few 

 lines, necessarily brief, as there is little time left, and I only 

 learned quite accidentally that the canoe was to be sent off. 

 I shall confine myself to a brief epitome of our progress so 

 far in the Pilcomayo. We entered the river on March 12th, 

 after having passed three most tedious months, rushing 

 hither and thither between different parts on the Parana. 



* For previous letters see above, p. 13, and 'Ibis,' 1890, p. 350. 



/ 



