110 LEPTIDvE. 



tibiae ; all tarsi black, with reddish-brown pubescence on underside 

 of hind pair; all legs with minute grey pubescence; two obvious 

 spines on middle and hind tibiae, and it is just possible that a small 

 one may be present on fore pair just before the slightly narrowed 

 tips, though apparently it is absent. Winys pale grey, veins 

 dark brown; halteres brownish yellow. 



Length, 10 mm. 



Described from a perfect unique $ in the Pusa collection from 

 Khasi Hills, 1000-3000 ft., iii. 1907. 



Type sent to British Museum. 



Subfamily CCENOMYINtE. 



Head: antennal 3rd joint flagelliform and annulated, with styli- 

 form tip and no arista. Palpi long, thin, pointed, porrect, 2-jointed. 

 Eyes hairy or bare, contiguous in S • Thorax and abdomen 

 robust, shortly pubescent or bare ; meso- and metapleurae with 

 tufts of pubescence; scutellum with two short blunt spines or 

 unarmed ; genitalia small. Legs comparatively short and strong ; 

 fore tibiae with one spur, posterior tibiae with two spurs. Basal 

 wing-cells long ; discal cell px-esent ; two submarginal cells, the 

 2nd long, with bell-mouthed tip ; five posterior cells, 5th in broad 

 contact with discal cell. 



The CcENOMYiy^E and Xylophagikjb are easily recognised by 

 the annulated 3rd antennal joint, and the latter are distinguishable 

 from the former by the four characters previously given in the 

 table of genera of Leptid^b. 



Only a few genera and species of CaaroMYijSLE are known 

 throughout the world. 



Life-history. That of Camomyia ferruginea, Scop., a widely 

 distributed European and ISorth -American species, is known. 

 The larva is amphipneustic, cylindrical, 12-segmented ; the head 

 conical, brown, chitinized ; the rest of the body with chitinized 

 spots and bands. Pupa free. The species breeds in decaying; 

 poplars and at the roots of trees, especially beeches ; the larva? are 

 carnivorous and voracious ; their total development may last over 

 a year. 



The adult insects are rather sluggish, frequenting woods. 



Genus CCEN0MYI0DES, gen. nov. 



Genotype, Cceaomyiodes edivardsi, sp. nov. ; the only species 

 known. 



Head comparatively small, narrower than thorax; placed some- 

 what low down ; occiput flattened ; epistoma separated from 

 cheeks by an impressed line ; eyes hairy, separated by moderately 

 broad frons in $ ( cf unknown) ; antenna? 3-jointed, the 3rd 

 flagellate, with eight aunulations, ending in stylate form, arista 

 absent ; palpi long, thin, labella broad ; proboscis rather short. 



