Bombyliidae (Diptera) from Central Africa. 621 
9 (10). Base of the second vein without recurrent veinlet . spec. indet. 
10 (9). Second vein with the usual recurrent veinlet at the base. 
11 (12). Upper branch of the cubital fork with the portion after the 
bend very sinuous ; no hyaline spot before the small 
cross-vein. . camptocladius, sp. n. 
12 (11). The upper branch atten ihe fond is straight ; a hyaline 
spot in the first basal cell just before the small cross- 
wei" : : ; : . . pasillus, Wied, 
24. Anthrax pithecius, Fabricius (1805). 
This is a common and widespread African species, with 
which conspwreatus, Wied. (1828), confusemaculatus, Macq. 
(1855), and spectabilis, Loew (1860), are without any 
doubt synonymous. The single discrepancy in Wiedemann’s 
description of conspurcatus is the yellowish legs: but this 
is a very variable character, which is affected by the 
relative maturity and state of preservation of the speci- 
mens. Plumula with black and white fringe. This species 
can perhaps be better placed in the genus Molybdamoeba, 
with the somewhat similar American figrina, de G. 
(simson, Fabr.). 
Several specimens from North Nyasa, Akamanga, October 
8, 1909 ; Karonga, September 14, 1909 ; Remero stream, 
November 24, 1909, and Bundi village, Fuliwa, May 13, 
1909 (all from Dr. J. LB. Davey). Also a specimen from 
Southern Nigeria, Oni, seventy miles east of Lagos, May 
14, 1910 (W. A. Lamborn). 
The size varies from 8 to 14 mm. 
25. Anthrax diffusus, Wiedemann (1824). 
A. maculipennis, Macq. (1840), is without doubt the 
same species. A. hessit, Wied. (1818), has the dark mark- 
ing at the base of the wings less widened. Plumula with 
a black fringe; anal cell open; there is often a rounded 
brown isolated spot on the lower vein of the discal cell. 
A single specimen from West Nyasa, Limpachi River, 
November 1909 (Dr. H. S. Stannus). But I have the 
species in my collection, through the kindness of Dr. 
Brauns, from Willowmore, Cape Colony. 
26. Anthrax aygulus, Fabricius (1805). 
An interesting species of large size, which had not 
hitherto been recognised as an <Argyramoecba in the 
published catalogues. 
The clear portion of the wings is truly hyaline, while in 
the preceding species it is smoky ; ; the two black spots are 
