EXOPSOSOPA. 195 



Litorhynchm collaris, Macquart, Dipt. Exot. ii, 1, p. 80 (1840). 

 Anthrax ruyicollis, Saunders, Tr. Eiit. Soc. Lond iii n 59 iil v 



tig. 5 (1841). 



Exoprosopa binotata, Macquart, Dipt. Exot. Supp. 5, p. 89 (1855) 

 Exoprosvpa collaris, Brunetti, Rec. Ind. Mus. ii, p. 444 (1909). 



c? . Head with f rons distinctly narrower at vertex than above 

 antennae, where it equals one-third the width of the head; dark 

 nut-brown, with a slight pink or orange tint, covered with short 

 black pubescence, and a few minute elongate pale brownish -yellow 

 scales or scale-like hairs on lower part; face of similar colour to 

 frons, with black pubescence and similar scales ; proboscis dark, 

 withdrawn ; anteunal 1st and 2nd joints ferruginous, 3rd black 

 occiput yellowish brown, with minute black bristles, which con- 

 tinue over the vertex nearly to the ocelli; and with whitish 

 scales forming a band of irregular width contiguous to the eve- 

 margins. Thorax black, with sparse black pubescence, covered 

 with very short depressed yellowish (almost pinkish) brown 

 scale-like hairs ; anterior margin with a thick fringe of very long 

 narrow brownish-yellow (varying to bright ferruginous) hair-like 

 scales; a bunch of similar scales below the humeri, on prothorax, 

 and below posterior corners of dorsum : coarse hairs of similar 

 colour cover the mesopleurae, with some black hairs intermixed 

 below wing base; sides of thorax dull orange-brown; humeral 

 calli reddish brown, with^numerous black bristles ; posterior calli 

 reddish brown, covered with pubescence like that of the thorax, 

 with several long strong spines projected hindwards. Scutellutn 

 uniformly dark reddish brown, with similar pubescence to the 

 thoracic dorsum ; hind margin with a row of spines. Abdomen 

 black, the sides often more or less reddish ; posterior margin of 

 1st segment narrowly, 2nd and 3rd segments from base to tip 

 (covering one-third of the surface on each side) dull but distinct 

 reddish brown ; the whole dorsum with short depressed blac-k 

 pubescence ; a fan-like bunch of rather dirty white very elongate 

 scales at sides of 1st segment ; a patch of long yellowish-white 

 scales towards each side of 3rd segment, contiguous to the 

 margin, and 6th segment (and possibly 7th also) covered with 

 similar scales ; the sides of the abdomen from 2nd segment to tip 

 with coarse black bristly hair. Venter moderately dark brown, 

 barely tinged with vellowish, but with paler hind margins to the 

 segments and a few soft yellowish hairs ; genitalia rather largo, 

 ferruginous. Legs reddish brown, metatarsi more or less darker, 

 rest of tarsi black ; fore legs, apart from the usual minute 

 pubescence, with rows of very short bristles on tibiae ; middle 

 femora with at least two rather strong bristles of unequal length 

 on inner side towards tip ; hind femora with a row of stronger 

 bristles below, posterior tibiffi with the usual rows of small 

 bristles; tarsi with short stiff black pubescence below. Wings 

 best described as pale grey with the basal third dark brown, 

 filling the anal and axillary cells except their tips, the colour 

 continued along the costa nearly to the tip of the 1st longitudinal 



c>2 



