Mr. T. Ayres on Trans- Vaal Ornithologij . 267 



156. Sterna leucoptera, Teinm. White-winged Tci-n. 

 Total length IQJ- inches, bill IfV, wing Sg, tail 3.] ; iris 



brown, bill black, tarsi and feet bright red. . 



The specimen sent was a solitary bird shot on 26th June, 

 1869, whilst hovering over the marsh near Potchefstroom. 



[This specimen appears to be an adult bird, partially (but 

 not fully) attired in breeding-plumage. J. H. G.] 



157. Sterna fissipes, Linn. Black Tern. 



This Tern was killed in the month of December, at the 

 lagoon at Loup-spruit, from a large flock which was apparently 

 engaged in catching insects on the wing, and which, after being- 

 shot at, wheeled round and round in a body to an immense 

 height, and then sailed away. The flight of these Terns was 

 unsteady, like that of many of the Gulls, as if the wings were 

 too large for the body. 



[The specimen sent appears to be a bird of the year. 

 —J. H. G.] 



[I add some remarks on Trans-Vaal birds already mentioned 

 in Mr. Ayres's notes, published in * The Ibis,' for 1869, 

 p. 286 et seq.—3. H. G.] 



22. TuRDUs DECKENi, Cab. Decken's Thrush. 



[The Thrush which Mr. Ayres referred to in his notes pub- 

 lished in ' The Ibis ' for 1869, p. 292, and which I there iden- 

 tified with Tiirdus olivaceus, Linn., proves on closer examination 

 to be T. deckeni, Cab. 



The true T. olivaceus occurs in Natal ; but I have not seen it 

 from Trans-Vaal.- "'H. G.I 



36. (L. 4^^j^^j. |.|jg , HAGRA FLAVIVENTRIS, Gmcl. YclloW- 



bellied Gross- ^.t^. 



[At p. 295 of the paper above referred to, is another incor- 

 rect identification which I am desirous to rectify. The species 

 there recorded as Crithagra butijracea, Linn., is in reality C.Jla- 

 viventris, Gmel. 



I am indebted to the kindness of Mr.R.B. Sharpe for the follow- 

 ing synonymy of this species, furnished to him by Dr. Finsch : — 

 Crithagra flaviventris (Gmel.). 

 ,, Jhiva, Swains. 



