120 ME. WALKER ON DIPTEEA COLLECTED AT MAKESSAB. 



rufescentibus, arista nuda, thorace vittis quatuor flavis, scutello fulvo, 

 abdomine fasciis quatuor lineaque transversa flavis fasciaque chalybea, 

 peilibus nigro-luteis, tarsis nigris, alls cinereis apud costam subfuscis, 

 halteribus flavis. 

 Male. Black ; head white, with a black callus above the antennae, which 

 are reddish ; arista simple ; proboscis black ; thorax with 4 yellow 

 stripes ; scutellum tawny ; pectus with a broad oblique pale yellow 

 band on each side ; abdomen with 4 yellow bands ; 1st and 2nd bands 

 very broad ; 1 st interrupted ; 2nd interrupted except in front, where 

 there is a yellow transverse line ; 3rd and 4th narrow, with a ehaly- 

 beous band along the hind border of the 3rd ; legs luteous, shaded 

 with black ; tarsi wholly black ; wings grey, slightly brown along the 

 costa ; veins black, tawny towards the base ; halteres yellow. Length 

 of the body 5 lines; of the wings 9 lines." 



Gen, Meeodon, Fahr. 



91. Merodon INTERVENIENS, n. s. Mas. FuscuS; flavescente-cinereo 

 tomentosus, capite testaceo, antennis nigris, arista nuda, scutello fulvo, 

 abdomine fasciis septem ventreque testaceis, pedibus fulvis, femoribus 

 nigro vittatis, femoribus posticis incrassatis, tibiis posticis nigris, alis 

 cinereis litura costali nigricante, halteribus flavis. 



Male, Brown ; head with short black hairs on the vertex, white behind, 

 pale testaceous, and with a brown stripe in front ; proboscis and an- 

 tennae black ; arista simple ; thorax thickly clothed with jellowish 

 cinereous down ; scutellum tawny ; pectus cinereous ; abdomen cylin- 

 dric-conical,with seven testaceous bands; under side testaceous ; legs 

 tawny ; femora striped with black ; hind femora incrassated ; hind 

 tibias curved, black; wings cinereous, with a blackish mark by the 

 middle of the costa ; veins black, halteres yellow. Length of the body 

 6 lines ; of the wings 10 lines. 



Geu. VoLucELLA, Geqf. 



92. VoLUCELLA DECORATA, n. s. Mas. Fulva, oculis thoraceque pu- 

 bescentibus, hujus disco cupreo-nigro, abdomine cupreo-nigro fasciis 

 tribus flavis, pedibus piceo-fulvis, tarsis piceis basi fulvis, alis vitreis, 

 costa lutea extus fuscescente, halteribus apice niveis. 



Male. Tawny ; epistoma very prominent ; eyes pubescent ; arista 

 broadly plumose ; thorax pubescent ; disk cupreous-black ; abdomen 

 cupreous-black, with three yellow bands ; 1st band basal ; legs slightly 

 shaded with piceous ; tarsi piceous, tawny at the base ; wings vitreous, 

 luteous and exteriorly brownish along tlie costa ; veins tawny, black 

 towards the tips; halteres with snow-white knobs. Length of the 

 body 7 lines ; of the wings 14 lines. 



Gen. Baetteeoceea, Walk. See Vol. L p. 123. 



93. Baryterocera gibbula, n. s. Fam. Cupreo-uigra, capite fla- 



