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



Genus Bombylius, Linn. 



Bomhylius albavitta ? 



Fcem. — Fuscus, subtus testaceus albido - tomentosus, antennis 

 nigris, thorace vittis duabus lateralibus albidis postice con- 

 nexis, abdomine vitta aigentea, lateribus albidis, pedibus 

 testaceis, tarsis nigris, alis antice fuscis postice sub-cinereis. 



Bomhylius albavitta? Macq. Dipt. Exot. Suppl. 1850, 421, 

 54, pi. 11, f. 5. Female. — Brown testaceous, and with whitish 

 tomentum beneath : head whitish beneath ; proboscis a little 

 longer than the breadth of the head ; antennae black, slender ; 

 thorax with two whitish lateral stripes, which are united behind 

 the scutellum ; abdomen with a silvery stripe, whitish along each 

 side; legs testaceous; tarsi black; wings brown in front, greyish 

 hindward, the grey part occupying the tips, but not extending to 

 the base of the hind border. 



Length of the body 4 lines ; of the wings 9 lines. 



Australia. 



Bomhylius furiosus. 



Mas. — Ater, pilis nigris dense vestitus, thorace fascia anticS, 

 lata testacea, abdomine pilis lateralibus Isete rufis, alis sub- 

 cinereis basi nigris apud costam sub-fuscescentibus. 



Male. — Deep black, thickly clothed with black hairs : thorax 

 with a broad testaceous band in front; sides of the abdomen with 

 bright red hairs, which do not extend to the tip; wings slightly 

 greyish, black at the base, slightly brownish along the costa for 

 two-thirds of the length ; veins black. 



Length of the body 3^ lines ; of the wings 6 lines. 



Natal. 



Fara. EMPID^. 



Genus Hybos, Fabr. 



Hyhos vittatus. 



Mas. — Niger, thorace vittis quatuor cinereis, pedibus testaceis, 

 tibiis posticis femoribusque nigris, illis et femoribus anticis 

 apice testaceis, tarsis apice nigris, alis nigricantibus, maculis 

 duabus costalibus cinereis, stigmate venisque nigris. 



Male. — Black : proboscis slender, porrect ; third joint of the 

 antennae almost round ; arista about twice the length of the rest 

 of the antenna ; thorax with four cinereous stripes ; legs testa- 

 ceous ; coxae, femora and hind tibiae black, the latter and the fore 



