154 C. H. TYLER TOWNSEND. 



58. — Whole surface of wings finely, but de.usely pubescent Uloinorpha. 



Wings not pubescent (or only some of the veins) 59. 



59. — Marginal cross-vein absent Phyllolabis. 



Marginal cross- vein present 60. 



60. — Axillary vein unusually short, curved abruptly toward anal angle. 



Trichocera. 



Axillary vein moderately or very long, not so curved 61. 



61. — Auxiliary vein united with costa by an extra cross-vein at about middle of 



wing Epipliraguia. 



Auxiliary vein uot so united with costa (genus Limnophila) 62. 



62. — Antennae of .'J, much longer than those of 9j filiform 63. 



Antennfe of "J, aud 9 not strikingly unequal 64. 



63.— A supernumerary cross-vein present in second basal cell. 



subgen. Idioptera. 

 No such cross-vein ; % antenna with a long, erect pubescence on flagellum. 



subgen. Liasiomastix. 

 64. — Two branches of second vein connected by a cross-vein. 



subgen. Dicraiiopliragnia. 



Two branches of second vein not so connected 65. 



65. — A supernumerary cross-vein in second basal cell; anteunse short in both 



sexes subgen. Eplielia. 



No such cross- vein 66. 



66. — Marginal cross-vein situated well beyond furcation of second vein, very 



little before tip of fiist vein 67. 



Marginal cross-vein situated immediately or but little beyond furcation of 

 second vein, and even in latter case well before tip of first vein. 



subgen. Liimuopliila. 

 67. — Subcostal cross-vein situated well before tip of auxiliary vein. 



subgen. Prioiiolabis. 



Subcostal cross-vein situated at tip of auxiliary vein, and appearing as 



though connecting first vein with costa, the auxiliary vein terminating 



in middle of cross-vein subgen. Dactylolabis. 



Family DIXID^E. 

 One genus Dixa. 



II.— NEMOCERA ANOMALA. 



Family BIBIONID^. 



1. — Second basal cell present (Bibionina) 2. 



Second basal cell wanting (Scatopsina) 5. 



2. — Third vein furcate 3. 



Third vein simple; second basal cell longer than first; wings of % never 



shortened 4. 



3. — Palpi 4-jointed; first aiitennal joint very elongate Ilesperiniis. 



Palpi 5-jointed Plecia. 



