APPENDIX. 819 
Page 242. SaxicoLa CINEREA. 
Is a Myrmecocichla, according to Mr. Seebohm (Cat. B. v, p. 358), who 
considers that 8. schlegeli (p. 237 of this work) belongs to the same 
species. 
Page 243. SAaxtcoLa DILUTA. 
Referred to S. leucomelena by Mr. Seebohm (¢. c. p. 377). 
Page 243. Saxicona casTor. 
Mr. Seebohm (¢. c. p. 380) considers this to be only a stage of 
S. monticola. 
Page 244, SaxicoLA POLLUX. 
Is a Myrmecocichla, according to Mr. Seebohm (¢. c. p. 357). 
Page 245. SaxICOLA ARNOTTI. 
Is not a true Chat, and is referred by the editor to the genus Tham- 
nolea (Cat. B. vii, p. 53). 
Page 246. SaxIcoLA SHELLEYI. 
Also referred to Thamnolea by the editor (¢. c. p. 52.) 
Ramaqueban River, on the way to Gubuleweyo June 24; near Sibanane, 
December 8 (Ff. Oates). 
Umyuli River, Mashoona Land, August 10th. Native name Inque- 
lechaine. “This is an arboreal Chat, frequenting the woods on 
the banks of rivers: only met with on the Umyuli” (Ayres). 
Fig. Sharpe in Oates, Matabele Land, App. pl. A. 
Page 246. SaxicoLA MONTICOLA. 
We have already referred (p. 247) to the difficulty of following the 
sequence of plumage undergone by this Chat, and so dissatisfied 
were we with the incompleteness of our information on the subject, 
that we wrote to all our friends in South Africa to ask them to 
work up the question and send us specimens In answer to this 
appeal our excellent correspondents Dr. Exton, Mr. Lucas and 
Captain Trevelyan sent us altogether twenty specimens, and with 
this increased material Mr. Seebohm went to work at the species 
for the British Museum “Catalogue of Birds.” The result he 
arrived at was that there was a white-headed form, Sazicola 
leucomelena, inhabiting Benguela and Damara Land (to which our 
S. anderssoni, p. 249, is to be referred), and a southern form, S. 
monticola, extending from the Cape Colony to Great Namaqua Land 
on the west and from Bloemfontein to the Transvaal in the centre 
of South Africa. These two forms interbreed and produce an 
infinite series of intermediate specimens, the strain of S. leu- 
3a 2 
