Annals of the Transvaal Museum 
247 
In this form the female is smaller than the male but similar in colour, 
blue-black above, buffy rufous below, except that the male is slightly paler 
on the throat. The tail is rather longer than in the preceding form, males 
96-105, female 95. 
Laniarius ferrugineus mosamhicus Rchw. 
Specimens examined from Beira and Boror, in the Lower Zambesi 
region. 
This form differs from the preceding in having the outermost tail 
feathers normally broadly tipped with white, the under parts of the body 
more evenly coloured from throat to under tail coverts, the former pale 
pinkish, the latter and the plumes of the rump pale buffy; it is also much 
smaller, males wing 87-94, tail 88-90, tarsus 29-31; the bill is propor- 
tionately smaller, the height at the nostrils only 8 mm. 
This form was originally described from Mozambique. L. aethiopicus 
hyhridus Neumann was described from Langenburg, East Africa, a little 
south of Gross Aruscha whence we have specimens, and at the same time 
it was said to occur southwards as far as the Limpopo ; but the latter state- 
ment is clearly an error. 
Laniarius ferrugineus stricturus Hartlaub. 
Ten specimens examined from Lusakas and Machile River, North- 
Western Rhodesia; this form was originally described from the Lake 
Ngami region. It differs markedly from all the preceding in having the 
underparts of the body almost pure white, only a trace of buffy showing 
on the abdominal region and under tail coverts. The sexes are alike, if 
correctly sexed by the collector, both in size and colour. It is considerably 
larger than the Lower Zambesi form, the tail particularly long, the dimen- 
sions being: wing 90-96, tail 96-104, tarsus 31-34 mm. 
North of our limits other forms are recognised, though there is some 
division of opinion upon their status, the white mark on the margin of the 
secondaries being taken for diagnostic purposes and found to be variable. 
In two specimens from Gross Aruscha the white mark is present, though 
not so conspicuous as in the southern birds, and in two from Mero Forest 
appears to be absent. Most likely this character will be found to be in- 
constant, but more regard must be paid to proper sexing of the specimens 
and their age, workers having been content to disregard these factors. 
Unfortunately, our four specimens from German East Africa above- 
mentioned are not sexed, as I note that they appear to be pairs from each 
locality, differing in the extent of huffish on the underparts of the body. 
The majority of green and yellow bush shrikes are commonly lumped 
together in the genus Chlorophoneus) but Sclater (Shelley’s Birds of A frica, 
V. 398, 1912) has placed C. quadricolor in Pelicinius, which is not far from 
correct as regards phylogeny, but it appears to me to be necessary to place 
it in a distinct genus, Pelicinius being a much larger and partly terrestrial 
genus, quadricolor strictly arboreal and smaller. I therefore name the genus 
Calophoneus, type Lanius quadricolor Cassin, characterised by its longer 
and narrower bill as compared with Chlorophoneus and its smaller size, 
and especially its smaller feet, as compared with Pelicinius] and as regards 
colour, characterised by its beautiful contrast of red and green, with a black 
band around the crop in the male. Another distinct genus, somewhat 
