826 DIPTERA OF AUSTRALIA, 



and 4 (wings), pi. iv. fig. 17 (genitalia), 1869; Gonomyia^ O.- 

 Sack., Studies, II. p. 200, 1887. 



" One or two sub-marginal cells ; the first, when present, very 

 short, suh -triangular, owing to the shortness and the oblique 

 direction of the anterior branch of the second longitudinal vein ; 

 no marginal cross-vein ; four posterior cells ; discal cell open or 

 closed ; when open it is coalescent with the third posterior cell ;* 

 wings glabrous. Antennae 16-jointed, rather short. Feet long, 

 slender ; tibite without spurs at the tip ; tarsi with distinct 

 empodia. Forceps of the male with several branches and linear 

 appendages. Ovipositor of the female slender, arcuated," (Osten- 

 Sacken). 



I cannot do otherwise than place the following species in this 

 genus, though it seems to deviate in certain particulars from the 

 normal type of Gonomyia ; chiefly in the great length of the 

 auxiliary vein, the structure of the discal cell and situation of the 

 great cross- vein (which reminds one of Gnojyhomyia), and lastly 

 in the uniform dull dark colouring of the body and legs, instead 

 of the usually yellow colour. I regret that I have not seen a male 

 specimen, in order to compare the structure of the forceps. This 

 species cannot be well included in any of the five sections of the 

 genus which have been recently defined by Baron O.-Sacken 

 (Studies, II. pp. 201-202). 



344. Gonomyia LEUCOPHiEA, sp.n. 



9. — Length of antennae 0*047 inch ... 1-18 millimetres. 



Expanse of wings 0*320 x 0-070 ... 8-12xl-77 



Size of body 0*260 x 0*030 ... 6*62x0*76 



* "With merely individual exceptions, according to Baron 0. -Sacken. But 

 in the species now described, it is unmistakably the posterior branch of the 

 fourth vein which is forked, so that in specimens with the discal cell open, 

 the latter would be coalescent with the second posterior cell. 



