MEXICAN MUSCIDAE, 



193 



preceding species , but differing by the absence of the white reflec- 

 tions on the anal segment and by the macrochaetae of the abdomen , 

 which are more numerous and also present on ihe disc of the 

 third segment. — Length 11 mm. 



Micropalpus angustifrons n. sp. <?. — Head yellowish; 

 front narrow, half as broad as the eyes; frontal band black ; basal 

 joints of the antennae black, the third joint dark rufous, double 

 as long as the second ; thorax and scutellum black , the thorax 

 anteriorly whitish with four black stripes; abdomen piceous with 

 white reflecting spots ; legs black ; wings nearly hyaline. — 

 Length 7 mm. 



Trichophora fucata n. sp. — Shining black; head whitish; 

 basal joints of the antennae rufous ; two (seldom three) bristles on 

 the cheeks; abdomen ovate, the anal segment piceous , laterally 

 with whitish reflections; second and third segments only with mar- 

 ginal macrochaetae; legs black; tegulae whitish; wings grey, brow- 

 nish towards the costa. — Length 9 mm. 



Trichophora convexinervis n. sp. <? ?. — Shining black; 

 head greyish ; antennae wholly black ; cheeks mostly with a single 

 bristle; abdomen ovate, the anal segment dark rufous; second and 

 third segments with marginal macrochaetae; legs black, tegulae 

 and wings brownish; posterior cross-vein distinctly curved outwards. 

 — Length 7 mm. 



Gymnomma discors n. sp. <? 2. — Head ochraceous; frontal 

 band dark rufous; basal joints of the antennae rufous, third joint 

 black, ovate, a little longer than the second; thorax cinereous; 

 scutellum, abdomen and legs rufous, the abdomen convex, with 

 some indication of blackish dorsal spots; third segment with discal 

 aud marginal macrochaetae; tegulae and base of the wings rufous. — 

 Length 8 mm. 



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