10S SYRPHID &. 
112. Syritta aculeipes, Schiner (1868). 
A single male specimen from Nairobi, 5. vi. 1911, appears to 
belong to this species, which, with the ae: of the hind 
femora, agrees in all respects with the foregoing. 
113. Syritta bulbus, Walker (1549). 
I believe I have this species before me in the shape of a female 
from Obuasi, Ashanti, West Africa (Dr. W. AL. Graham), which 
is readily distinguishable owing to the yellow colour of the thoracic 
pollen, of the hind femora, and of the abdominal spots. The 
abdomen, which is wanting in Walker’s specimen, is velvety black, 
shining only on the last segment; the first segment has a small 
yellow’ spot on the sides; the second and third have broader lateral 
yellow spots; the tail has a yellow spot on the fore corner and 
2 yellow hind border; the hind femora have a very strong basil 
spine. This specimen agrees very well with the description of 
S. bulbulus, Speiser, 1913. 
I also refer to this species a male from Durban, Natal, 8. ix. 
1903 (# Muir), which shows the same coloration of the hind 
femora, and has also a strong basal spine on the latter; its color- 
ation, however, is like that of pzpiens, and the thoracic tomentum 
has the usual colour and disposition. 
114. Syritta fasciata, Wiedemann (1830). 
Tam of opinion that the present species is the Ethiopian repre- 
sentative of S. pipiens, L., from which it differs in its smaller size, 
paler antennze and face, Sate extended yellow markings on the 
abdomen, the second yellow band (7. e. that on the third “seament ) 
being mostly uninterrupted i in the middle in the male and being 
very “broad in the female. The hind femora are black, varying 
more or less to a reddish brown ; they are finely toothed beneath 
and bear long white hairs, which, as in pipiens, appear to be 
deciduous. Hind trochanters smooth, not so beset with minute 
spines as in pipiens; coloration of abdomen and legs apparently 
variable as in pzpiens. 
S. abyssinica, Rondani, from Keren, Abyssinia, of which I have 
topotypes before me, is only a smaller variety with black hind 
femora. 
Two males from Durban, Natal (# Muir), and one from Sierra 
Leone (J. Moxcroft). 
115. Syritta stigmatica, Loew (1858). 
T refer with some doubt to this species some specimens which 
seem to be only a variety of the preceding. They are usually ot 
greater size, the yellow markings on the third abdominal segment 
fe the female are greatly reduced, the wings are more or less infus- 
