coNOPs. 349 



thirds ot" their length, thi^ iniddlo pair with distinct but short 

 hhick hairs behind ; tihi;e ilatteiied behind at the tips, where they 

 exhibit silvery retlectioiis when viewed from above; tarsi black,, 

 piilvilli (jrey below, Wiur/s dark grey; anterior part from costa 

 to 3rd longitudinal vein more or less darker brown, varying in 

 intensity in different parts; halteres yellowish-orange. 



Leiu/th, 14 mm. 



Described from one c? (not $ ) from the lAishai Hills, Assam 

 (3600 ft.), 14. iv. ( ? 1909). In the Indian Museum. 



Though originally described under the genus Physocephala, this 

 species is probably better referred to Conops, on account of the 

 entire absence ot any thickening of the hind femora, and the 

 position of the anterior cross-vein at the middle of the discal cell. 

 The strong basal contraction of the abdomen is a character o£ 

 Phi/soci'phcda, but one which is, I think, of minor importance, 

 and the species may be considered as to some exteut intermediate 

 between the two genera. 



27i'. Conops pactyas, Wall: 



Conops pactyas, Walker, Ins. Saund., Dipt. pt. iv, p. 255 (1852). 



6 2 . Head: frons black, a little reddish-brown above the black 

 anteunal prominence ; eye-margins narrowly gilded ; face and 

 lower part of head orange, with (seen from above) golden-grev 

 leflections; proboscis blac-k, nearly twice as long as head; 

 antennpe black, a short orange streak on apical half of under side 

 of 3rd joint ; occiput orange-yellow, mainly black in centre. 

 Thorax wiiolly black, sliglitly dusted with golden-yellow on hind 

 margin of dorsum and hinder side of metanotum ; metapleurte 

 dusted with yellowish-grey. Abdomen black ; a broad golden 

 dust-band on hinder half of 1st and 2nd segments, on 3rd and 4th 

 also in c? ; oth in (S considerably dusted with golden-yellow; 

 Gth segment reddish-brown at tip and grey-dusted ; genital shield 

 very large and long, front side reddish-brown, inner side black. 

 Legs: coxse black with whitish reflections; hinder side of hind 

 pair reddish-brown ; femora either orange-brown (tvpe) or 

 black, in the latter case with about, apical half of hind pair 

 and greater part of under side of all pairs, orange-brown : 

 tibia; brownisli-orange, a little darker towards tips, with brilliajit 

 silvery reflections on outer side ; anterior tarsi black, hind pair 

 dark brown ; i)ulvilli and claws bright yellow, extreme tips of 

 latter Idack. Wimjs grey, anteriorly moderately dark blackish- 

 brown, this colour being delimited posteriorly by the 3rd vein, 

 but including the 1st posterior cell except its hinder side; 

 lialteres dark brown. 



Length, 13 mm. 



liedescribed from the iype $ from Java in the Ih-itish 

 Museum and a second $ from Lashio, Upper iJurma, 3000 11., 

 23-24. viii. 1914 (FhtcJter). The femora of the latter ex«m|)le 

 are much n)ore blackish than those of thety[)e, and the outer sides 



