l\Ir. J. II. Mallocli on Exotic Muscarl(la\ 277 



resemblinf^ three large spots. The anterior margin of tho- 

 racic dorsum in this species has only the sulimedian pair of 

 black spots present, while in fasciata there are four black 

 spots present. 



Localities: three males, Benguella, Angola, S.W. Africa, 

 300 miles from coast, xii. IDOl- (Dr. F. C. Jf'ellt/ian) ; one 

 male, Bihe, Angola, xii. 1903-iii. 1904 (Dr. F. C. Wellman) ; 

 one male and one female, Ruwe, Congo Free State. 4 & 8. v. 

 1907 (Dr. A. Yak-Massey). 



One of the Benguella specimens bears a manuscript-label 

 as follows : "Very sluggish, sylvan, but often seen on out- 

 side of native kraals, etc.^' 



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). 

 Spiloyaster fasciata, Jaennicke, Neue Exot. Dipt. p. 370 (1866). 



Two males and one female, Lagari, B.E.A. (C. S. Bettan). 

 No indication is given as to the habits of this species. 



Genus Darwinomyia, nov. 



Generic characters. — Related to Phaonia; differs in having 

 the frons of the female with a pair of strong cruciate 

 biistles, 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 Dichopticus, Rondani, it differs in having 

 the hind coxae bare at apices above. From Dendrophaonia, 

 Malloeh (genotype quercefi, Rouche) 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 Trichopticus 

 { = Lasiops, Meigeu) in habitus, but, as pointed out above, 

 there are no setulose hairs at apices of hind coxre above. 

 The wing-veins are bare and the first posterior cell is not 

 narrowed at apex. 



Genotype, the following species. 



