226 Mr. F. Walker's Characters of undescribed Diptera 



Male. — Black, shining ; head ferruginous in front and on each 

 side beneath, where it is tumid ; wings black, with numerous 

 minute white dots ; alulae snow white, very large. 



Length of the body 3^ lines; of the wings 8 lines. 



South Africa. 



This species and a few more have the alulae like those of 

 the Muscidce Calyplcrcc, but differ from them in every other 

 character. 



Genus Loxoneura, Macq. 



Luxoneura Perilampo'ides. 



Focm. — Viridis, crebre punctata, subtus nigra, capite antennisque 

 rufescentibus, scutello abdomineque cyaneis, hoc dilatato, 

 femoribus anticis spinosis, alis subcinereis, costa fasciisque 

 duabus nigris, guttis costalibus albis. 



Female. — Green, tliickly punctured, black beneath; head and 

 antennae reddish ; proboscis and palpi black ; thorax conical ; 

 scutellum and abdomen blue, the latter much broader and shorter 

 than the thorax ; legs black ; fore femora spinose ; wings slightly 

 greyish, black along the costa and with two black bands ; three 

 minute white costal dots. 



Length of the body 5 lines; of the wings 12 lines. 



Genus Lamprogaster, Macq. 



Lamprogasler lepida. 



Fcein. — .Laete viridis, capite rufescente, fronte ex parte picea, 

 pedibus fulvis, tarsis testaceis apice nigris, tibiis anticis ex 

 parte piceis, alis luteis, strigis transversis guttaque subcostali 

 fuscis, alulis halteribusque fulvis. 



Female. — Bright metallic green ; head reddish ; front partly 

 piceous ; legs tawny ; tarsi testaceous, with black tips ; fore tibiae 

 partly piceous ; wings luteous, with brown streaks at the base, 

 with a brown streak extending from the pra-brachial transverse 

 vein towards the costa, with a brown streak on the discal trans- 

 verse vein, with a brown exterior subcostal dot, and with a brown 

 costal and apical streak ; alulae and halteres tawny. 



Length of the body 4 lines; of the wings 10 lines. 



Celebes. 



J 



