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188 DIAGNOSES OF NEW 



XANTHOMELANA n. gen. — Head broader than the thorax ; 

 front not prominent , in both sexes broadly separating the eyes 

 (except one species, anceps , in which the front is triangular in £ 

 and the eyes nearly contiguous on the vertex); frontal bristles 

 weak; vibrissae at some distance above the oral margin, which is 

 slightly prominent. Antennae shorter than the face; third joint 

 oval or elliptical; arista bare. Abdomen cylindrical, showing five 

 segments , with marginal macrochaetae. Legs with some bristles ; 

 foot-claws and pulvilli elongate in the £. Wings usually blackish 

 along the costa; curvation of the fourth vein rounded; apical cell 

 closed and shortly petiolated at the wings tip. — The flies of this 

 genus are black with more or less extended yellow or rufous por- 

 tions on Ihe abdomen. 



Xanthomelana articulata n. sp. £. — Black; head, shoul- 

 ders and the transverse suture of the thorax yellow; abdomen 

 rufous, black towards the end; femora rufous at the base; wings 

 blackish, more obscure towards the costa; antennae elongate, the 

 arista thick and distinctly jointed at the base. — Length 5 mm. 



Xanthomelana rubicunda n. sp. (<? ?}. — Thorax black with 

 yellow and whitish markings; head white; antennae short, arista 

 not visibly jointed; abdomen and legs rufous; antennae, frontal 

 bund, scutellum, and the last two segments of the abdomen , black ; 

 wings blackish, darker at the base and along the costa. — Length 

 4,5 mm. 



Xanthomelana dorsalis n. sp. £ $. — Thorax black with 



yellow markings; abdomen yellow, with a black dorsal band or 

 1 black dorsal spots; head pale yellow; legs black, the coxae and 



base of the femora yellow; wings black on the costal half. — 

 Length 7 mm. 



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Xanthomelana trigonalis n. sp. <?. — Yellow; frontal band, 



antennae, three stripes on the thorax, trigonal dorsal spots on the 



