DURHAM DIPTERA. 67 



XII. 



15 (16). X.l.b. close to the tip of V.I .a. 



Lipsothrix, Lw. (114) 



16 (15). X.l.b. a long way from the tip of V.I .a. (IV. 19). 



17 (18). V.7. very much looped (IV. 19). Symplecta (112) 



18 (17). V.7. straight. 



113. Trimicra, O-Sack. (734. pilipes, F.) 



Sub-Family D. — Limnophilin^e. 



1 (2). V.7. very short, and suddenly bent downwards 



(IV. 22) Trichocera, Mg. (122) 



2 (1). V.7. not short, and nearly straight (IV. 21). 



3 (4). 0.1. a. divided by an extra X-vein about the middle 



of the wing. Epiphragma, O-Sack. (119) 



4 (3). 0.1 .a. not divided by an extra X-vein. 



5 (8). 0.5 1 divided by an extra X-vein. 



6 (7). Antennas long and thin. Idioptera, Mcq. (115) 



7 (6). Antennas short, and thick at the base. 



Ephelia, Schin. (116) 



8 (5). 0.5 1 not divided by an extra X-vein. 



9 (10). X.5. opposite the base of O. 



Dactylolabis, O-Sack. (117) 



10 (9). X.5. near the middle of O. (IV. 21). 



11 (12). Wings with numerous black dots. 



Poecilostola, Schin. (118) 



12 (11). Wings without spots. {JSSSSifeS %) 



Sub-Family E. — Anisomeriisle. 



1 (2). Antennae apparently 6-jointed in the male and 10- 



jointed in the female. 123. Anisomera, Mg. 



2 (1). Antennae apparently 7 -jointed in the male and 9- 



jointed in the female. 124. Peronecera, Curt. 



Sub -Family F. — Amalopin^e. 



1 (2). Antennae 13-jointed. Dicranota, Ztt. (126) 



2 (1). Antennae 16- 17 -jointed. 



