63 



24. Torbda geniculata, Cam. 



Torbda geniculata, Cameron,* Entoru. 1902, p. 19 ( ). 



Black ; head, thorax, and abdomen marked with whitish ; 

 scutellum black, with its apex alone white ; legs fulvous, with 

 trochanters, apices of femora and of the hind tibiae broadly black ; 

 coxae white, black-marked ; wings evenly subfulvescent hyaline 

 throughout, with the nervures and stigma black. 



Length 25 millim. ; terebra 13 rnillhn. 



ASSAM : Khasi Hills (Rothney). 



Type in the Oxford Museum. 



At once known by its large size, flavous segmental apices, with 

 sides of the seventh segment concolorous, its mainly black body 

 (in which it differs from the last two species), mainly black 

 scutellum and black hind knees, by which it may be distinguished 

 from all the following. 



25. Torbda violaceipennis, Cam. 



Torbda violaceipennis, Cameron,* Entom. 1902, p. 19 ( $). 



Black ; face, orbits t and scutellum broadly, and thorax marked 

 with white ; legs fulvous, with coxae black, marked with white ; 

 wings evenly violescent throughout, with the uervures and stigma 

 black. 



Length 25 millim. ; terebra 10 millim. 



ASSAM : Khasi Hills (Kotlmey). 



Type in the Oxford Museum. 



Extremely like the above species and possibly a form of it, though 

 differing in having the wings more strongly iufumate, with the 

 nreolet narrower, the cubital nervure more strongly sinuate, the 

 lower basal nervure but slightly antefurcal, the seventh segment 

 subimmaculate, the hind femora and tibiae paler and with no black 

 markings, and the scutellum nearly entirely flavous. 



26. Torbda femorata, Cam. 



Torbda femorata, Cameron,* Entom. 1902, p. 19 ( 5 ). 



Black, broadly marked with white ; legs fulvous, with coxae and 

 trochanters white ; hind coxae, femora and apical half of tibiae 

 black; hind tarsi white, basally black; wings evenly infuscate- 

 hyaline throughout, with the nervures and stigma black. 



Length 22 millim. 



ASSAM : Khasi Hills (Rothney). 



Type in the Oxford Museum. 



The only known male of this genus and very much more 

 slender than any of the females, among which it might be 



