394 DURHAM DIPTERA. 



LVII. 663. 



143 (142). Third antennal joint in the male not nearly so large 



as the eye ; size t.\ mm. 



Phora utnbrimargo, Beck. 

 Bedburn, i $, 12-6-05. 



144 (141). Costal ciliation short. 



145 (146). Frons matt, blackish grey; V.I. and V.3. approxi- 



mate; hind tibiae thickly ciliated. 



(ruficomis, Mg., vax.flavicoxa, Ztt.) 

 146(145). Frons long, arched, and shining black; V.I. and 

 V.3. not very close; hind tibiae bare. 



(imdipes, Beck.) 



Section IV.— EPROBOSCIDEA. 

 Family LVIIL— HIPPOBOSCID^E. 



1 (10). Wings present, or if wanting, at least traces of them 



are always perceptible. 



2 (7). Wings broad, round at the tip, not pointed ; or rudi- 



mentary. 



3 (6). Each tarsal claw doubled ; ocelli generally absent. 



4 (5). Wings always fully developed, and the front veins 



very thick and prominent. 



665. Hippobosca, L. (2875. equina, L.) 

 (Parasitic on quadrupeds, especially horses). 



5 (4). Wings rudimentary, or if present then all the veins 



faint and almost invisible. 



669. Lipoptena, Nitz. (2880. cervi, L.) 

 (Parasitic on quadrupeds). 



6 (3). Each tarsal claw tripled ; ocelli present. 



666. Ornithomyia, Ltr. 

 Parasitic on birds. 



2876. Ornithomyia avicularia, L. 

 Bishop Auckland, 2, on domestic fowls. 



7 (2). Wings very narrow, pointed at the tip. 



8 (9). Ocelli present. 



