Mr. T. Ayres on the Ornithology of Transvaal, 399 



NiLAUs BRUBRu (Lath.). Brubru Shrike. 



This species is generally distributed, but is not very com- 

 mon in the Rustenburg district; it is mostly a solitary bird, 

 and may be found hunting for insects about the foliage of 

 the trees. 



330. PoMATORHYNCHUS ERYTHROPTERUS (Shaw). RufoUS- 



"winged Bush- Shrike. 



(A) Female, Rustenburg, June 3rd. Irides bluish slate- 

 colour ', bill black ; tarsi and feet very light slate-colour. 



(B) Female, Rustenburg, July 18th. 



(C) Female, Rustenburg, August 9th. Bill black; tarsi 

 and feet light ash-colour. Total length 9^ inches. 



(D) Female, Rustenburg, August 16th. Irides slaty blue ; 

 bill black ; tarsi and feet light ash-colour. Grasshoppers in 

 the stomach. 



This Shrike is not uncommon ; it frequents the low bush, 

 and is an adept at hiding. 



[I have taken the following measurements of the four spe- 

 cimens sent by Mr. Ayres : — 



Wing. Tarsus. Tail. 



A 3-80 1-20 3-80 



B 3-55 1-10 3-90 



C 3-70 1-20 3-90 



D 3-60 1-10 3-80 



—J. H. G.] 



331. PoMATORHYNCHUS TRiviRGATUs (Smith). Tlircc- 

 streaked Bush-Shrike. 



(A) Sex uncertain. 



(B) Ditto, Rustenburg, June 24th. Irides dusky hazel; 

 bill light dusky brown, with the basal part of the under man- 

 dible pale ; tarsi and feet light ash-colour. 



(C) Female, Rustenburg, July 8th. Irides dark hazel; 

 bill dusky brown ; tarsi and feet pale ash-colour. 



(D) Female, Rustenburg, August. 



This species appears to be about equally numerous with 

 the preceding one, and inhabits similar situations. 



[The following are measurements taken from the above- 

 named four specimens of P. trivirgatus : — 



