BY ARTHUR WHITE. 79 



6. Lecogaster White. (Fig. 3). 



When this genus was proposed, only the male was known; 

 specimens of the females of two species are now, however, to 

 hand. The eyes of the male are densely hairy, widely separated 

 at vertex, but almost joined at base of antennae; of the female, 

 only sparsely pubescent, and well separated throughout. An- 

 tennae about the same length as the head, third joint annulated, 

 and provided with a blunt, in-turned style. Scutellum with, 

 normally, six spines, but two of these may be difficult to dis- 

 tinguish. Abdomen short, but extremely broad. Wings with 

 the basal half of the costal margin greatly inflated in the male, 

 to a less extent in the female; cubital vein witli a long fork; 

 discal cell with four, issuing veinlets, the first, second, and fourth 

 complete, the third incomplete. 



The species belonging to this genus may be easily recognised 

 by their extremely broad, metallic-blue abdomen, and spined 

 scutellum. Two species are at present known. 

 Table of the Species of Lecogaster. 



1 . Wings hyaline ; thorax blue ; sciitelluni flat can-idea White. 



2. Wings with a black spot on the middle of the costal margin; 



thorax black; scutellum much upraised cyanea, sp.nov. 



Lecogaster CiERULEA White. 



Thorax, scutellum, and abdomen bright metallic-blue; scu- 

 tellum not upraised; antennae and legs black; wings hyaline. 

 Length, ^, 8 mm. 



/fa6.— Victoria and Tasmania. 



This species, though of somewhat wide distribution, seems to 

 occur very sparingly. There are two specimens in the collection 

 of the Melbourne Museum. 



Lecogaster ctanea, sp.nov. (Fig.3). 



Thorax black; abdomen bright metallic-blue; scutellum much 

 upraised; femora and tibiae black, with the knees and tarsi white; 

 wings with a black spot occupying the apex of the first basal 

 cell and reaching to the costal region. Length, 5, 7 mm. 



Hah. — New South Wales (Milson Island). 



Female. ^¥a,<ie black, bearing white pubescence. Front black. 

 Eyes with sparse but fairly long, white pubescence, rather more 



