114 ANALYTICAL TABLE OF FAMILIES 



PSYCHODIOE, VIII 



17 (16). Wings flat over D ; X on middle of wing. 



18 (19). Veins hairy (plate IV, 13). 



CULICIOE, IX 



19 (18). Veins bare. 



19'' (I9&). Antennae long ; V, 4 and V, 2 forked ; X, 4 (plate IV, 14) 

 ending in V, 2. 



DixiM, X 

 196 (I9a). Antennae very short but il-jointed ; no veins forked. 



ORPHNEPHILID/E, VII 



20 (5). Thorax (plate VI, 32) with a strong cross seam. 



21 (22). V, 6 absent (plate IV, 15). 



PTYCHOPTERIDyE, XI 



22 (21). V, 6 present. 



23 (24). V, la ending in costa and (plate IV, 17-22) united to V, I b 



by X, ib ; last joint of palpi (plate VI, 4) never whip-like. 



LlMNOBID^E, XII 



24 (23). V, la ending in V, Ib ; and, except for X, la at its base, not 



united by X (plate IV, 23-26) ; palpi (plate VI, 5). 



TIPULID^:, XIII 



25 (2). Antennae short, 3-jointed (plate III) ; 3rd joint sometimes 



ringed. 



BRACHYCERA (short-horns) 



26 (140). Wing veining normal ; X-veins present. 



27 (32). Third antennal joint ringed ; A, IV, 6, if present (plate III, 



1-9) apical. 



28 (29). Costa ending at apex of wing (plate V, I). 



STRATIOMYID^:, XV 



29 (28). Costa around the hind margin (plate V, 2). 



30 (31). Squamae very large. 



TABANID^;, XVI 



31 (30). Squamae very small. 



Part of LEPTID.E, XVII (genus Xylophagus) 



32 (27). Third joint of antennae (plate III, 10-55) not ringed. 



33 (55). Arista terminal or wanting (plate III, 10-26,28-32,35-40,48) 



34 (46). V, 3 forked (plate V, 3-10, 13). 



35 (45). O, 6i long, extending (or nearly) to hind margin, or entire- 



ly wanting (plate V, 3-9, 13). 



