378 conopidjE. 



siderably below level of eyes ; epistome bare or finely but distinctly 

 liaired ; ocelli present; eyes in both sexes wide apart, bare: 

 proboscis lono-, cylindrical, somewhat bristly, bent at base and at 

 middle ; palpi short ; antennae set on a slight prominence, sliort ; 

 Ist joint short, 2ud elongate-conical, both bi'istly ; 3rd much 

 shorter than 2nd, round or oval, bai-e, with dorsal, basally 

 thickenetl arista. Thorax subquadrate, shorter than broad; 

 scutellum semicircular. Abdomen very short, curved, narrowed 

 at bnse, bare or slightly pubescent, posteriorly rather broader. 

 Genitalia in S not prominent, and only moderately so in $ . 

 Legs moderately long and stout : hind femora rather longer, 

 pubescent. Wings with venation as in Coyioj^s, often with darker 

 markings. 



Range. AVorld-wide. 



Life-history. Heyden has stated that the larva is parasitic on 

 certain Hymenoptera, as is customary in this family. The adults 

 are generally distributed, occurring especially on umbelliferous 

 flowers, and are sluggish in nature. 



Myopa is a genus of rather small reddish-brown, slightly 

 pubescent flies, with the abdomen short. They exhibit certain 

 characters associated with the more typical ConopiDjE and others 

 which are associated with the Muscib^. 



Tahle of Species. 



1. First posterior cell nearly clear, but with a 



distiuct inftiscated spot in the centre; wings 

 grey, with darker parts here and there ; a 

 distinct, small, round, black spot on either 

 side in middle of lower part of cheek ; two 

 larger brownisli spots on each side behind 

 middle of occipital margin ; femora indis- 

 tinctly ringed, tibije with three or four 



distinct narrow black rings pida, Panz., p. 379. 



first posterior cell never with a central spot ; 

 wings imiformly grey or yellowish-grey, 

 unmarked (in tesUicea the anterior cross- 

 vein is snft'used) ; no spots on head except 

 near base of .antennfe 2. 



2. Legs wholly orange-brown dorsalis, Fabr., p. 379. 



Legs always with bhick rings o'r markings . 3. 



3. Abdomen wholly black; femora with a 



broad black median ring (sometimes much 



redticed) : wings entirely blacldsh-grey, [p. 380 



unmarked niffrtventn's, sp. n., 



Abdomen orange-brown ; leg markings 

 reduced to indistinct or incomplete rin^is 

 on the femora, and two fairly well-detined 

 narrow rings on bind tibiae ; wings moder- 

 ately dark grey, yellowish basally, anterior 

 cross-vein distinctly suffused tedacea, Linn., p. 381. 



M. cincta, Tabr., is not included in the table, as the description 

 of it is insufficient. 



