158 THE DIPTERA-BRACHYCERA OF TASMANIA, 



black, with yellow bands on the second, third, sixth, and 

 seventh segments. 



Length. Male and female, 10 mm. 



Hab. Generally distributed. (Also in Victoria.) 



Male and fetnale. Face black, with yellowish-grey 

 tomentum at sides; moustache yellow. Antennae red. 

 Front black. Thorax considerably arched, brownish- 

 black, with long white hairs; scutellum red. Abdomen 

 short, a rounded club-sha,pe (instead of a lengthened club- 

 shape as in B. nitidus and B. Jinibipennis), black, with 

 yellow bands on posterior margins of the second, third, 

 sixth, and seventh segments. Legs with femora black on 

 basal half, red on apical half ; tibiae red, with apex black ; 

 tarsi black ; femora and tibiae with a few small black and 

 red bristles. Wings short, brown, darkest along the costal 

 margin, the discal cell and basal half of first posterior cell 

 hyaline. 



This species may be easily recognised by the brownish 

 wings, with a hyaline spot in centre, and the short abdo- 

 men of a rounded club-shape. It seems to be generally 

 distributed in the Tasmanian bush, but is not common. 

 My dates range from January 4 to March 3. 



B. fenestrata differs so much from B. vifidu.^ and B. 

 Jinibipennis in the shape of the abdomen and much shorter 

 wings that it might well be made the type of a new genus. 

 It seems to' be nearly allied to the genus Codula, but differs 

 in having a curved terminal spine on the anterior tibiae ; 

 this character, however, in some specimens is difficult to 

 make O'ut, and I am somewhat doubtful of its value as 

 a generic character. 



Brachyrrhopala ruficornis, Macq. 



This species is unknown to me, and I take thei following 

 particulars from Miss Kicardo's description. 



Wings with the basal half brown, apical half hyaline; 

 thorax and abdomen black, the latter with yellow bands ; 

 antennae and legs red. 



Length, 6mm. 



Hab'. Tasmania and Queensland. 



Face black, with white tomentum; moustache white. 

 Front black. Antennae red, a little brown at the apex. 

 Thorax black, with scanty yellow tomentum ; scutellum 

 testaceous. Abdomen black, with yellow bands. Legs red, 

 the anterior half of posterioT femora and base of inter- 

 mediate pair black; anterior tarsi black. Wings with 

 basal half reddish-brown, apical half hyaline. 



