96 SYRPHID_E. 
99. H. (Mesembrius) strigilatus, Bezz: (1912). 
Recently described by me from French Congo and Portuguese 
Guinea. 
There are in the collection two female specimens from Busoga, 
Uganda, iii. 1906 (Dr. 4. D. P. Hodges), and a female from 
Obuasi, Ashanti (Dr. W. VW. Graham), which I refer with some 
doubt to this species. 
100. H. (Mesembrius) minor, sp. n 
3 2. Length of the body 11°5—12 mm. 
A small species, nearly allied to the preceding one, but distin- 
guished by the simple last abdominal segment of the male, by the 
Bice pattern of the female, and in both sexes by the narrow 
median pale line on the thorax. 
Head black, covered with dense yellowish pollen, the ocellar 
triangle alone being shining black; all the hairs are yellowish ; 
antennal tubercle and middle line of the face also shining black ; 
antenne entirely black, the third joint rounded, with a dark 
reddish-brown arista; eyes brown, unicolorous, bare, touching 
along a short line in the male, separated as usual in the female ; 
proboscis black. Thorax yellowish grey on the back, with three 
black stripes, the middle one abbrey tated behind and divided by a 
very narrow median pale line; pleure grey, more densely pollinose 
towards the middle; scutellum yellowish, darkened at the base. 
All the hairs on the thorax are pale. Halteres whitish; squamule 
yellowish, with a yellowish fringe. Abdomen reddish yellow, the 
lateral spots on the second segment in the male more yellow than 
in the female; first segment black; second with the usual 
A-shaped median black mark and with a reddish hind border ; 
third segment with a similar median mark, which, however, is not 
dilated forwards and is more erey behind; four th erey, yellowish 
on the sides and behind, with a dull black spot towards the middle 
of fore portion; genitalia black; belly pale yellow; all the hairs 
long and pale. In the female the first segment is grey, yellowish 
towards the sides ; the yellow band on the second is not interrupted 
in the middle; the third and fourth are grey, yellowish on the 
sides, with an arched transverse black band ; the fifth is tr angular, 
grey at the base, shining black at the apex. Legs black, erey 
pollinose, and with pale hairs; tips of the femora, tibix, and basal 
joints of tarsi yellow, in the male more broadly, the front tarsi 
being even entire ‘ly yellow; hind femora of the male thickened 
with an external yellow fringe, provided below near the base with 
. brush-like tuft of dense black and brown hairs; before the end 
the ve is a not very prominent black-haired tubercle and on the out- 
side in the apical third there is an elongate, deep, shining furrow ; 
hind tibie curved, black on the apic ‘al half; hind tarsi entirely 
black. Wings greyish hyaline, witha faint yellowish tinge near the 
base ; the veins are black externally ; discal cell not appendiculate ; 
kink in the third vein not very deep, but broad and rounded. 
