I40 



Memoirs of the Indian Museum.. [Voi.. TIT, 



Type : Tephritis cognata, Wiedemann, 1817. 



This genus is rather heterogenous ; the species are yellow or black, with very 

 different patterns of the wings ; the length of the first vein, the approximation of 

 the cross- veins and the shape of the wings are also very different in the different species. 

 The typical species cognata and lucida have a yellow body, less approximate cross- 

 veins, narrow wings with the rivulet pattern. 



The three yellow Indian species here described are different in the wing-pattern, 

 which is sometimes Hke that of Rioxa. The species of this group are not satisfactorily 

 distinguished from those of Spilographa , the only valuable distinction being the 

 position of the small cross- vein, which in the last genus is placed before the middle 

 or on the middle of the discal cell. 



The other Indian species have a black body and are allied to the European caesio ; 

 they have broad wings with more approximate cross- veins and with a pattern con- 

 sisting of a black basal portion with hyaline indentations and of apical black bands. 



Most of the remaining species, of which none are present in the collection, I refer to 

 the genus Philophylla, Rondani, 1870 {=Euleja, Walker, 1836, preocc), which is very 

 well distinguished by its bare arista , by the shape of the head being broader below with 

 the occiput swollen beneath and the mouth-opening very broad, by the narrow eyes 

 and by the narrow and elongate wings. 



I recognize as belonging to this genus the European heraclei, centaur eae, separata, 

 the North American fr atria and the South African excellens. This last species was 

 previously placed in Hemilea, which genus is also only a section of Acidia, and the 

 name of which must be Ocneros, O.G. Costa, 1844, as stated by Rondani. 



The species are characterised as follows : — 



1 (2). Wings dimidiate, the fore half black, the hind half hyaline . . . . fraestans, n sp. 



2 (i). Wings not dimidiate. 



3 (8). Colouring of the body yellow or ferruginous; arista pubescent ; wings 



long and narrow, with the middle longitudinal veins parallel and of a 

 Rioxa-MkQ pattern ; species of larger size (5 — 7 mm.). 



4 (5). Only a superior or.; cheeks very narrow; cross-veins less approximate, 



the distance being greater than the length of the hind cross-vein ; 



wings with three black bands .. .. .. ., .. himalayensis, n. sv. 



5 (4). Two superior ok., as usual ; cross-veins more approximate, the distance 



being shorter than or equal to the length of the hind cross-vein : wings 

 with RioxaAike pattern. 



6 (7). First vein short, ending much before the small cross-vein, the stigma 



of usual shape ; cheeks rather narrow ; metanotum and abdomen 

 entirely yellow ; third joint of the antennae of male black ; apical black 

 patch of the wing united to the rest of the pattern, and without hyaline 

 spot , . . . . . . . . . . . . . rioxaeformis, n. sp. 



7 (()). First vein very long, passing the small cross-vein, the stigma twice as 



long as in the preceding ; cheeks very broad ; metanotum with two 

 large black spots and the abdomen black at the end ; antennae of the 

 male yellow ; apical black patch isolated and including a hyaline spot apicalis,n. sp 



8 (3). Colouring of body black; arista shortly pilose ; wings short and broad, 



