FROM THE RIVER GABOON. 
P. 306.— Lzonotus guttatus, Verreaux (see p. 132 supra). The 
genus Lconotus is thus defined by the authors: “Plume uropygii 
rhachide robustissimé. Ale rotundate remigum prima robustis- 
sim&; secunda longitudine, none; tertia sextam #quante; quarta 
et quintaé omnium longissimis. Cauda equalis. Pedes brevissimi. 
Rostrum breve, gracile, compressum, subincurvum. 
P. 307. — Pratincola salax, Verreaux, This is the species 
termed P, olax, at p. 133 supra, an error into which I was led 
by the obscurity of the writing on M. Verreaux’s label. 
—  P. 308.— Hyliota violacea, Verreaux. The authors have cor- 
rectly referred this bird, which they originally designated Musci- 
capa violacea, to the genus Hyliota (see p. 132 supra). 
P. 309 — Platystira leucopygialis. The authors state, that the 
P. leucopygialis of Fraser is the adult 9, and his P. castanea the 
young 9; and that the adult male differs in haying a white semi- 
collar at the back of the neck. It is however evident, on com- 
paring their own descriptions with Fraser’s figures in the “ Zoologia 
Typica,” that his lewcopygialis is a male, though possibly an im- 
mature bird; and that his P castanea is the adult 2. 
P. 310.— Atticora melbina, Verreaux. Hirundo melbina, supra 
p. 131. This bird may perhaps be regarded as correctly placed 
in Atticora, though that genus seems to be little more than an 
artificial receptacle for several stray Hirundinide from all quar- 
ters of the globe, possessing the form but not the coloration of 
Hirundo. 

