Brachyopa. 385 



26. Bpacfaiyopa Meig. 



Species of medium size, somewhat Muscid-like ; they are slightly 

 hairy and of yellow or grey colour, or with thorax grey and abdomen 

 yellow. Head not large, scarcely as broad as thorax; it is broader 

 than high, narrowed downwards and somewhat triangular in circum- 

 ference; it is distinctly arched behind but somewhat suddenly ex- 

 cavated above. Eyes not large, touching in the male, separated in 

 the female. The eyes are bare, the facets in the male a little enlarged 

 towards the front corner. Antennæ inserted in the middle of the 

 head, they are somewhat short, third joint ovate; arista longer than 

 the antennæ, short pubescent (in the nearly allied genus, or subgenus, 

 Hammerschmidtia [non-Danish] somewhat plumose). Epistoma con- 

 siderably hollowed below the antennæ; there is no central knob but 

 the lower part with the front mouth edge is much protruding, nose- 

 like, the lateral angles a little retreating; epistoma is reddish yellow, 

 it has only some hairs below at the margin, for the rest it is bare. 

 Jowls not small, somewhat descending as also the lower part of 

 epistoma. Jowls and epistoma are separated by a longitudinal groove 

 at the lower eye-margin. Oral cone and proboscis somewhat long. 

 Clypeus with the upper undivided part longer than broad. Labrum 

 and hypopharynx long, the apex of labrum of usual shape, the deeply 

 €left median process shorter than the others; hypopharynx pointed; 

 maxillar lacinia somewhat shorter than labrum, the slightly clubbed 

 palpus a little longer than the lacinia; the palpus and lacinia with 

 bristles and microscopical hairs in the usual way. The basal part of 

 labium longer than the somewhat broad labella. Thorax rectangular 

 but a little narrowed in front and considerably behind. Scutellum 

 red or brown, without marginal fringe below. There are (generally) 

 some bristles or bristly hairs above the wing-base, on postalar calli, 

 at the upper hind corner of mesopleura and at the margin of scutellum. 

 (hl some species of Hammerschmidtia^ f, inst. ferruginea, they are 

 developed as strong bristles and there are here also notopleural 

 bristles present). Metapleura short-haired. Metathoracal epimera not 

 specially developed and not meeting in the middle, but sending a 

 process in under the halter. Abdomen rather short, almost not longer 

 than thorax with scutellum; it is not narrow, broadest at the hind 

 margin of second segment and then somewhat rapidly narrowing 

 behind; in the male there are four not transformed segments, the 

 first short, the others equal in length. Genitalia somewhat large. In 

 the female there are five normal abdominal segments, the rest small 

 and hidden, the last ending with two lamellæ. Legs somewhat stout, 



25 



