38 



fore tarsi black, except metatarsus, middle metatarsi yellowish 

 white, rest of tarsus brownish yellow. Hind legs browuisb 

 yellow, with indistinct traces of brown here and there, base of 

 femora narrowly pale yellow ; tibiee rather flattened at base and 

 slightly pinched beyond the middle, with two indistinct, though 

 fairly obvious, moderately broad, blackish rings, one just beyond 

 base, the 2nd suhapical ; tarsi brownish yellow, last two or three 

 joints black ; the 4th joint in all the tarsi much shorter than any 

 of the others. Wings pale grey, gradually darker on apical half, 

 stigmatic region moderately dark brown, ill-defined ; halteres 

 large, yellow. Venation as in Pacliyy aster. 



Length, 11-12 mm. 



Described from five d J, Darjiling, '1000-3000 ft., v. 1912; 

 one $ from above Turn, Garo Hills, Assam, 3900 ft., vii. 1917 

 (Kemp) ; a pair from Shillong, 4900 ft., 31: v. 1918 (Rao). 



Subfamily CLITELLARIIN^.* 



Head comparatively larger than in PACHYGASTKIX.E ; eyes often 

 densely hairy : antemue variously shaped ; 3rd joint annulated, elon- 

 gate (Lasiopa), conical (OUteUaria), or somewhat clubbed or oval 

 (Oxyeera, Nemotelns). Thorax stout, subquadrate or widened in the 

 middle, occasionally with a strong spine on each side (Ephippium, 

 Neyritomy'ui) scutellum spined or not. Abdomen about as long 

 as tborax, 5- or 6-segmented, varied in form, generally subquadrate 

 or oblong. Legs moderately long and strong, with soft pubescence 

 or bare. Winys with 2nd vein often apparently anastomosed 

 with 3rd ; 4th vein with three terminations ; 5th vein forming 

 hinder side of discal cell, therefore posterior cross-vein absent. 

 In some cases the 5th vein touches the discal cell for so short a 

 space that the connection almost appears as the posterior cross- 

 vein ;f 5 posterior cells, all united on wing-margin. 



This subfamily is characterised by the absence of the posterior 

 cross-vein, therefore the discal cell apparently emits four veins. 

 The normal absence of an antennal arista and apparent union of 

 the 2nd vein with the 3rd are also good characters. The species 

 are moderately or rather densely pubescent, or quite bare. 



Life-history. Larva, in addition to the eleven body-segments, 

 with an apical tip at the posterior end, bearing a few bristles 

 instead of a fringe of hairs. The metamorphoses of some European 

 species of Oxycera are well known, the larvae living in mud or 

 water ; and that of Ephippium also, it being parasitic in nests of 

 formica fuliyinosa. 



* For table of Oriental genera, vide Brunetti, Eec. Ind. Mus. i, p. 113: for 

 HERMETIIN.K, id. I. r. p. 120 (1907). 



t According to Verrall, in such cases the species are regarded as belonging 

 to the CLITELLARIIN.E. The presence of the posterior cross-rein would place 

 them in the STRATIOMYIN.E. this character being the only structural dividing-line 

 between them. It would perhaps be better to unite both groups under 

 STRATJOMYIN.K. 



