XANTHOGRAMMA. 3/7 
3 (6) Middle yellow bands on the abdomen entire, 
the tirst alone being sometimes inter- 
rupted. 
4 (5) Face with a black median stripe or at least 
darkened in the middle on the tubercle ; 
a black supra-antennal spot also usually 
present; first yellow abdominal band 
broadly interrupted.....0.....00.. 00. rotundicorne, Loew.* 
5 (4) Face wholly yellow, not even darkened in 
the middle; supra-antennal spot want- 
ing; first abdominal band never inter- 
rupted, at the most constricted towards 
theprmtldle rs, «cra « »: fs ; me ee: pfeifferi, Big. 
6 (3) Abdomen with four pairs of broad yellow 
POURED IEBOES bigs! .c. Sule pt feds oda 52 . calonus, Loew. 
31. Xanthogramma xgyptiam, Wiedemann (1830). 
A very distinet species on account of the elongate third antennal 
joint and incomplete vellow notopleural stripe, and, in the male sex 
the peculiar form of the front claws and hind trochanters. 
In my recent paper on the Syrphide collected by Fea (1912), 
I have stated that this species is distinct from the Oriental sez- 
tellare, Fabr. (1805). This last, common throughout the Oriental 
Region and described from the Island of Formosa as Jsehiodon 
trochanterica by Prof. Sack (1913), is distinguished from the 
present species in having the spine of the hind trochanters much 
thicker and proportionally shorter, the inner front claw simple, the 
seutellum more darkened, and the first yellow abdominal band of 
the female always interrupted in the middle. 
The following names are synonyms of egy ptium :—brachy- 
pterum, Mhomsan (1869), felix, Walker (1852), fuscotibiale, 
Macquart (1842), longicorne, Macquart (1542), and natalense, 
Macquart (1846); further, Syrphus senegalensis of Guérin-Méné- 
ville (1835) seems to be only the form of the present species in 
which the abdomen is entirely yellow in its apical half. 
The species 1s common throughout the Ethiopian Region. 
There are many specimens of both sexes from Northern “and 
Southern Nigeria : Baro, x. 1910 (Dr. A. Ingram); Zungeru, 
xi. 1910 (Dr. J. W. S. Macfie); Gangeru and Aba, ix. 1910 
(J. J. Simpson) ; os iv. 1911 (Dr. A. Connal); Ikom, i. 1912 
(E. Dayrell). There are also specimens from British East Africa, 
Isiola R. (#. J. Stordy), and from Salisbury, 8. Rhodesia CG. 2 
AK. Marshall). 
32. Xanthogramma pfeifferi, Bivyot (1854). 
Nearly allied to rofundicorne, but easily recognised by the wholly 
yellow frons and face, and by the entire first yellow abdominal 
band. 

* Not in the collection ; included for comparison. 
