iJ'PTinv. 103 



exaininatiou, except two genera oh' iny own that I have attrihuted 

 to it. Williston admits the .subfamily, but iiu-kides Xylomyia, 

 which is essentially a Stratiomyid ; whilst GJntops, the only other 

 North-American genus, exce\jt Arthroceras itself, has given rise to 

 some discussion as to its exact position. 



The Ccenomtin.t; are large, heavy, rather bare, and Tabanid- 

 like flies with com|jaratively short legs. 



The VEBMiLEOXi^TiE are not Oriental, so only a passing note 

 need be given them here. They differ from the Lt'^PXiN^ by the 

 eyes being wide apart in both sexes, by a different structure of 

 the face, and, to a less extent, the body. The 3rd longitudinal 

 vein forks later and more widely, and the wings are cuneiform at 

 their bases, without alulaj ; the venation, though technically 

 normal, shows minor variations. 



Tahlc of Indian Suhfamilies and frenera. 



1. Antennae palpably elongate ; ord antenna! 



joint distinctly annulated ; no arista .... '2. 

 Antennae not palpably elongate ; .'ird antennal 

 joint never annulated, but rounded, conical, 

 or reniform; arista present. (Leptin-s:.) . . o. 



2. All tibiae spurred ; ord antennal joint without 



style . :J. 



Fore tibise without spurs ; 3rd antennal joint 



with a style-like prolongation (absent in 



Fararthropeas). (Arthroceeatin.?-:.) . . 4. 

 8. Fifth posterior cell in broad contact with 



diseal cell ; face with rounded socketed 



epistonia ujargined by broad side-cheeks : 



eyes in <S contiguous; scutelluni with two [nov., p. 110. 



short blunt spines. (Ccenomyin^.) .... Cosnomyiodks, gen. 

 Fifth posterior cell not touching diseal cell ; 



face flat, epistonia not socketed or mar- 

 gined by broad side-cheeks ; eyes in S 



well separated; scutellum without spines. [p. 104. 



(Xylophagin^.) EHACHiCERrs.Walk., 



4. First antennal joint much the longest ; 4th [p. 107. 



posterior cell open Desmoimyia, Brun., 



Thu'd antennal joint more than double as 



long as 1st and 2nd together; 4th posterior [nov., p. 108. 



cell closed PARARXHROPEAS.gen. 



o. Third antennal joint kidney -shaped ; arista 



dorsal, subdorsal, or apical <>. 



Third antennal joint round, oval, or pointed ; 



arista always apical 9. 



(!. Arista apical; palpi wholly bare, much en- [p. 122. 



larged, spatulate ". MArELLOPAi,PUS,Big., 



Arista dorsal or subdorsal ; palpi slender, 



ahvays pubescent, generally bisinuate, more 



conical and pointed than in Leptis and 



Chrysopilus 7. 



7. Eyes in cJ separated by about the width of 



the ocellar tubercle, or actually contiguous 



for a short distance ; in J the frons three 



times as wide as the ocellar tubercle .... 8, 



