( 480 ) 



TIMELIIDAE (cf. anted p. 228), add: 

 Sericornis olivacea Salvad. 



Siricoriih olivaceii Salvador!, Ann. Mus. Civ. Gen. xxxvi. p. 100 (1896 : Moroka). 

 Sericorni.-! j)iisiUa Rotlisch. & Hart., antea p. 228 (Mt. Gayata). 



1 cJ, Mt. Cameron, OnOO ft., 6. viii. 1896. 



2 S6, 2 ? ?, Avera, Aroa River, February— March 1903. A. S. Meek coll., 

 Nos. A 180, 251, 412, 439. 



1, Mt. Gayata. (Type of S. pusilla.) 



The new material from Avera, Aroa River, has convinced ns beyond doubt 

 tliat our S. pusilla is a (probably somewhat immature) female of S. olicacea. 



Two birds, one marked (J, the otlier not sexed, collected by J. M. Dumas 

 at the Ambernoh River and Mt. Maori, seem to belong to this neighbourhood, 

 but are much whiter underneath. One is young, the other in moult, almost 

 without tail-feathers. These two birds are not sufficient to decide what they 

 really are, but they are probably a new form of a Sericornis. 



{To be continued.) 



DESCRIPTION OF A NEW SPECIES OF GAZELLA. 



BY THE HON. W. ROTHSCHILD, Ph.D. 



(Plate XV.) 



Gazella albonotata spec. nov. 



This gazelle is nearest to G. rufifrons, and occurs in portions of the same 

 country as the latter. 



It differs from G. rufifrons in having, the nose and lower half of the central 

 face-stripe black with a slight mixture of rufous hairs instead of bright rufous 

 sandy. Face-strij)e from eye to nostril white instead of buff. Area between 

 tear-duct and lips dark butf, strongly mixed and shaded with black instead of pale 

 butfy rufous. Head and neck pale isabelline instead of rufous buff. Upper half 

 of face and forehead pale rufous mixed with white, almost entirely white between 

 the horns. Horns wider spread and more recurved backwards than in G. nijifrom, 

 the points more turned inwards, the rings deeper cut and more conspicuous. 

 Habitat : East Bank of White Nile (type from 40 miles north of Kero or Kiri). 



