9 
o SYRPHID&. 
A single male from Salisbury, S. Rhodesia (G. dA. XK. 
Marshall). 
28. Syrphus trisectus, Loew (1858). 
Very near balteatus, but differing in its smaller size and 
brighter orange abdomen ; the abdominal black bands are usually 
nae duplicated, that of ite fourth segment generally being widely 
interrupted in the middle; and the “black supre a-antennal spot is 
always present. 
Of six specimens examined, only a male from Durban has the 
duplicated bands well dev eloped and shaped almost as in balteatus ; 
this specimen also is the only one which has the black band on the 
hind border of the fourth segment entire. ‘The eyesare wholly bare, 
even in the undescribed male, which entirely resembles the female, 
except in the sexual differences. 
A male and a female from Durban (#1 Muir); three females 
from British East Africa, one from Kenia Forest, near Luchi 
River, 9.ii1.1911 (7. J. Anderson), another from Oyanyi, 8. vii. 
1910 (Dr. J. Pugh), and the third from Marsabit, 20.ix. 1911 
(R. J. Stordy); a male from Obuasi, Ashanti, 11. vin. 1900 (Dr: 
W. M. Graham). This species was up to the present known only 
from Caffraria, Fat has evidently a wide distribution throughout 
the Ethiopian Region, where it replaces the European balteatus. 
29. Syrphus redivivus. sp. n 
3g. Length 10 mm. 
A narrow elongate species, with black striped face, yellow 
antennz, three partly interrupted yellow abdominal bands, and black 
genitalia. 
This species appears to belong to the auricollis-group, and 
allies among the described Ethiopian species are schultzianus, Bezzi 
(1908), cinctifacies, Speiser (1910), and fee, Bezzi (1912). 
Head black; frons and face vellow, the former more reddish; a 
black supra-antennal spot and a ‘brown facial middle stripe reaching 
the base of the antenne ; peristoma narrow, vellow; facial tubere le 
rounded, large, prominent; frons clothed with long dark hair, 
face with white hair on the side; vertical triangle small, not 
very prominent; eyes bare, with the upper facets larger ; antennze 
short, yellow, the third joint rounded, narrowly darkened above ; 
middle postocular border with silvery hairs. Thorax shining, 
yellowish towards the sides, but without any sharply defined yellow 
stripe, clothed with long erect dark hair ; pleuree blackish’ erey, 
yellowish on the hind angle of mesopleura ; breast shining black, 
bare. Scutellum dark yellow, with black hair. Squamule dirty 
white, halteres yellow. Abdomen shining black, but second, third, 
and tourth seaments broadly dull velvet v black on dise; its hair 
is long and dark, but pale on the base ; first segment black; second 
with an ovate yellow spot on each side, placed in the middle and not 
reaching the sides; third and fourth each with two oblique spots, 
