MICRODON. 133 
developed; hair on thorax, scutellum, and pleurz entirely black ; 
alar squamula black-fringed like the thoracic ; abdomen darkened 
towards the middle of the fourth and fifth segments, the sutures of 
the third, fourth, and fifth segments almost obliterated i in the middle ; 
legs as in the male ; wings more blackened in mature specimens. 
“Type dsa single specimen from British East Africa, Yala River, 
southern edge of ‘Kakumega Forest, 4,800—5,300 ft., 21-28. v. 1911 
(S.A. Neave): ; type &, from Uggnda Protectorate, "Mount Kokan- 
jero, S.W. of Elgon, 6,400 ft., 7-9. viii. 1911 (S. A. Neave); an 
additional female specimen a eect Western Ankole, 4,500— 
5,000 ft., “in forest,” 12-14. x. 1911 (S. A. eave). 
138. Microdon inermis, Loew. 
A black species, with black wings and dark red abdomen and 
legs. 
Lassume this specimen to belong to Loew’s species, since it corre- 
sponds exactly to the description; the stump on the third vein is 
not wanting, as stated by Prof. Hervé-Bazin (Rev. Zoolog. Afric. 
ii. 1913, p. 98), but is long and well developed, as in the allied 
species. Pubescence very short ; basal joints of the antennz bare ; 
ocelli close together. Loew’s description was based on a male from 
Caffraria, and Hervé-Bazin has described a female from Katanga. 
The female is like the male ; the frons and face are very broad, the 
the latter with well-defined furrows running from the base of the 
antennee to the jowls; sutures between the es abdominal segments 
obliterated towards the middle ; halteres whitish yellow, not reddish 
as in the male; wings blue-black. There is no difference between 
the sexes in the colour of the pubescence on the head, thorax, and 
scutellum. 
A male specimen from British East Africa, 13 miles north of 
M'bagori’s Village, towards Meru, 13.11.1911 (7. J. Anderson): a 
female from M bagori’s Village, edge of Kenia Forest, 5,000 ft., 
12. 11. 1911 (same collector). 
159. Microdon pallidus, sp. n. 
$ 9. Length of body 10-12 mm., of antenna 4 mm. 
Very like the preceding species, but distinguished by its smaller 
size and the paler coloration of the abdomen, legs, and wings. 
The two sexes are alike in coloration. 
Head black, punctate, and dull, with very short yellowish pubes- 
cence; frons of the male eontmieted below the middle, and with a 
deep transverse groove connecting the inner angles of the ey os 
frons of the ene broad, and witha less distinct transverse groove 
ocelli fairly close together ; face without the distinct furrows seen 
in the preceding species; occipital border in the female, from the 
vertex to the jowls, of a dark reddish colour; head below clothed 
with long erect white hair; antenne long, the first and the second 
segments clothed with short black hair: third joint shorter than 
