o06 TlIEEE^nD.T^. 



segment (on whicli they are most numerous) onwards, but tliey 

 are very inconspicuous and easily overlooked ; venter covered witli 

 snow-white tomentuui and some short white pubescence, the bases 

 of some of the apical segments being blackish. Legs : coxae and 

 femora clothed with snow-white pubescence ; tibia) (except tips) 

 and about basal half of metatarsi brownish yellow ; rest of legs 

 black. Wimjs pale grey, vitreous, veins towards base yellowish; 

 halteres pale j^ellowish. 



Lenf/th, cj" 5 , 9-11 mm. 



Described from a long series, mostly males, in perfect condition 

 from Pusa, Bengal, where it is apparently to be found from 

 January to July inclusive, it having occurred in abundance on 

 13 and 1 4 . iii . 1909, performing aerial dances between 8 and 9 a.m. 

 In the British Museum from Mahagany and Tiriyai, Ceylon, taken 

 in January, May, June, September, and November (Cot. Yerhury) ; 

 Castle Eock, 11-26 . x . 191G (Kemp). 



245. Psilocephala affinis, Krbh. 



Psiloeephala afinis, Kriiber, Ent. Mitteil. Berl. i, p. 254 (1912). 



"d". Near P. ardea. P.,* and P. cei/lonica, n. sp. The whole 

 body covered with snow-white pubescence, except for some brown 

 hairs intermixed on the thorax. The 1st and 2nd antennal joints 

 black-haired ; frons and epistome silvery white, extreme margin 

 of frontal triangle deep velvet-black ; antennae deep black, thin ; 

 back of head grey, below nearly white, orbital bristles black. 

 Thorax dark grey, with two whitish longitudinal stripes, between 

 and beside which the colour appears almost brownish ; scutelhun 

 like tliorax ; sides of thorax silvery grey. Abdomen very silveiy, 

 ]netallic ; 2nd to 5th segments with snow-white edges ; genital 

 lamellpe reddish yellow ; venter similar to upper side, ground- 

 colour black, with hind margins of segments «hite and with 

 silvexy reflection. Pemora and tarsi black ; tibia) and extreme 

 base of metatarsi of middle and hind legs yellowish brown ; 

 extreme tips of tibiae more or less blackish brown. Wings 

 absolutely hyaline; 4th posterior cell closed; halteres with stalk 

 yellowish, knobs aa liite with black base. Length 9-91 mm. 

 Type 6 from Agra, in A^ieana Museum."' (Kr'uber.) 



Although the expression metallic as applied to the abdomen 

 seems suggestive of specific distinctness, this insect is almost 

 certainly identical with sequa, A\^alk. 



Genus PHYCUS, Wall: 



Fki/cus, Walker, Ins. Sauud., Dipt. pt. 1, p. 2 (1850). 



Genotype, Xylopluujus cctnescens, AValk. ; by original designation. 



Head transverse, broader than thorax ; proboscis short, thick, 

 not extending beyond anterior mai'gin of eyes ; palpi shorter than 



* A European species. 



