38 SYRPHID &. 
I have redeseribed this species in the above-quoted paper on Fea’s 
Syrphids ; Bigot’s description, which was previously included among 
the synonyms of @gyptium, corresponds very well with these speci- 
mens, chiefly because Bigot calls the third antennal joint “rounded.” 
Perhaps it is only an ene form of rotundicorne, Loew (1858 ), 
of which there are no specimens in the collection, but which is 
common in South Africa, dentatum, Walker (1852), being probably 
the same species, which is represented. i in the Oriental Region by 
the nearly allied yavanum, Wiedemann (1824). 
Several specimens of both sexes: Karonga, Nyasaland, v. 1910 
(Dr. M. Sanderson) ; Zungeru, N. Nigeria, xi. 1910 (Dr. J. W. 
NS. Macfie and J. J. Simpson); Koba District, Nile aS 
Uganda, vi. 1909; Lilongwe, Nyasaland, 8.1.1911 (Dr. J. #. S 
Old) : Angola, 1908 ce: W ‘ellman); Mauritius, 1911 (NV. B. Rock). 
This species also seems to be widely spread throughout the 
Region. 
33. Xanthogramma calopus, Loew (18538). 
Very distinct from any other species, on account of its eight 
very broad and rounded yellow abdominal spots, which recall those 
of Syrphus braueri. 
A single female specimen from Pinetown, Natal, 20. iv. 1902 
(Ff. Muir). 
Genus 8. BACCHA, Fabricius (1805). 
Of this rich genus, only the following species have been recorded 
or described from the Ethiopian Region: (1) picta, Wied. (1830), 
(2) vittata, Wied. (1830), (3) sapphir tna, Wied. (1830), (4) 
claripennis, Loew (1858), (5) flavicornis, Loew (1863), (6) 
punctum, Bigot (1885), (7) brevis, Karsch (1887), me (8) eury- 
ptera, Bezzi (1908). Of these the second is the same as the first, 
and the fifth and sixth are the same as the third; the seventh is 
perhaps the same as the fourth. There are thus only four good 
Ethiopian species, compared with thirty from the Oriental Region. 
It is therefore not surprising that the present collection contains 
numerous new species, some of which are very interesting and 
beautiful. 
They can be tabulated as follows :— 
1] (2) Wings very narrow and cuneiform at the 
base, without alula and without promi- 
nent axillary lobe ; frons produced before 
the vertex into a conical protuberance, 
which bears the ocelli; abdomen very 
long and narrow, much longer than the 
wings; face yellowish below on the sides. conifrons, sp. n. 
2 (1) Wings notnarrowed and often very dilated, 
ulways with well-developed alula and 
axillary lobe; frons without protuber- 
ance or with a very slight one ; abdomen 
