Mr. J. R. Malloch on Exotic Muscaride. 27T7 
resembling three large spots. The anterior margin of tho- 
racic dorsum in this species has only the submedian pair of 
black spots present, while in fasciata there are four black 
spots present. 
Localities: three males, Benguella, Angola, S.W. Africa, 
800 miles from coast, xii. 1904 (Dr. F. C. Wellman) ; one 
male, Bihé, Angola, xii. 1903-111. 1904 (Dr. F. C. Wellman) ; 
one male and one female, Ruwe, Congo Free State. 4 & 8. v. 
1907 (Dr. A. Yale-Massey). 
One of the Benguella specimens bears a manuscript-label 
as follows: ‘* Very sluggish, sylvan, but often seen on out- 
side of native kraals, ete.” 
It is possible that this insect has similar habits to the 
preceding one, and is more active after sundown than 
through the day. Ordinarily the related species are—at 
least in temperate regions—exceedingly active during the 
daytime and are difficult to approach. 
The Ruwe specimens were taken “in houses” (MS. note 
attached to specimens). 
Helina fasciata (Jaennicke). 
Spilogaster fasciata, Jaennicke, Neue Exot. Dipt. p. 870°(1866), 
Two males and one female, Lagari, B.E.A. (C. S. Betton). 
No indication is given as to the habits of this species. 
Genus Darwinomy1a, nov. 
Generic characters.—Related to Phaonia; differs in having 
the frons of the female with a pair of strong cruciate 
bristles, the genital apparatus of the same sex with numerous 
stiff, erect, setulose*hairs, and the hind tibia in both sexes 
with several bristles basad of the calcar on the postero-dorsal 
surface. From Trichopticus, Rondani, it differs in having 
the hind coxe bare at apices above. From Dendrophaoniae, 
Malloch (genotype querceti, Bouché) it differs in having the 
forwardly directed orbital bristle absent in female and the 
cheek without a strong upwardly directed bristle in the male. 
The male resembles the stout forms of Tvrichopticus 
(=Lasiops, Meigen) in habitus, but, as pointed out above, 
there are no setulose hairs at apices of hind coxe above. 
The wing-veins are bare and the first posterior cell is not 
narrowed at apex. 
Genotype, the following species. 
