668 Messrs. Sclater and Mackwortli-Praed on [Ibis, 



SyLVIETTA ISABEILINA. 



Sylviella isabellina Elliot, Field Columb. Mus. Publ., 

 Orn. Ser. vol. i. 1897, p. 44 : Le Gud, Somaliland. 



Sylviella yaikwari Sharpe^ Bull. B. 0. C. xi. 1901, p. 47 : 

 Auin, Somaliland. 



Sylvietta erlangeri Reichw. 0. M. 1905, p. 25 : Enuia 

 Galla, Somaliland. 



This species, of which S. gaikwari and S. erlangeri Reichw. 

 appear to be synonyms, is nearly allied to the " rufescens " 

 group. As, however, there would be a very great and 

 unusual gap in the distribution if it were placed in that 

 group, we prefer to regard it as a separate species. 



II, " Wliytii-jacksoni^^ group. 



1. Sylvietta whytii whytii. 



Syviella whytii Shelley, Ibis, 1894, p. 13 : Zomba, 

 Nyasaland. 



Sylviella fischeri Reichw. Orn. iMonatsb. 1900, p. 22: 

 Maliudi, British E. Africa. 



Distinguished from the " rufescens" group by the lack of 

 a dark stripe through the eye and the more rufous cheeks. 

 The bill also is smaller. Underside pale rufous. Wing 

 52-57 mm. 



According to Zedliiz (J. f. O. 1916, p. 25) S. fischeri is a 

 synonym. 



Range. Nyasaland, S. Rhodesia, and Portuguese E.Africa, 

 north along the coast to Mombasa and the Teita country. 



2. Sylvietta whytii minima Grant, Ibis, 1900, p. 156 : 

 Manda Island, British E. Africa. 



Very similar to S. w. whytii, but with the upperside a 

 considerably paler grey. Wing 51-55 mm. 

 Range. Manda Island, British E. Africa. 



3. Sylvietta whytii jacksoni. 



Sylviella jacksoni Sharpe, Bull. B. O. C. vii. 1897, p. 7 : 

 Kamassia, British E. Africa. 



Considerably richer in colour than either of the last two 



