86 Tachinidae. 



on ^V? — ^'/s- Most of my specimens are taken sitting on walls of 

 sheep-cots (Esben-Petersen); they were rather inactive. 



Geographical distribution: — All Europe, Asia, Africa, North 

 and South America and Australia. 



III. Hypoderminae. 



3. Hypoderma Latr. 



Large or somewhat large, densely pilose flies, with the pile of 

 more or less variegated coloiir. Head about as broad as or a little 

 broader than thorax, a little convex behind, somewhat higher than 

 long. Frons broad in both sexes, broadest in female, a little protruding; 

 orbits broad. Jowls about three fourths of the height of the eye; they 

 are somewhat compressed so that a lateral edge is formed. No bristles 

 present and occiput yellow-haired without postocular bristles. Frontal 

 suture reaching to the lower end of the eye; cheeks narrow, rim-like, 

 with fine, erect hairs. Vibrissal ridges sharp above, downwards broad 

 and flat, confluent with the intermediate triangles on the jowls; 

 below they bend quite in to the small mouth aperture; inwards they 

 are divided by a furrow from the broad shield-shaped middle part 

 of epistoma. The whole epistoma (the vibrissal ridges included) 

 is very broad; it is arched and somewhat retreating; the antennal 

 foveæ above on it are round deep holes, divided by a high carina. 

 No vibrissæ. Eyes bare. Mouth parts rudimentary. Antennæ inserted 

 below the middle of the eye; each antenna is placed in its fovea and 

 not stretching much out of it; they are quite short, second joint 

 calicular, third globular, more or less hidden in second; arista bare, 

 thickened in about basal third. Thorax quadratic or nearly roundish. 

 Scutellum with a pointed protuberance at each side at base, truncate 

 at apex and liere a little incised in the middle so that two slightly 

 marked tubercles are formed. Thorax and scutellum without bristles 

 and no sternopleural bristles. Hypopleura with a bunch or fan of 

 yellow hairs. Abdomen ovate, somewhat pointed, most in the female, 

 without bristles. Fifth sternite in male triangularly excised about 

 to the middle. Legs somewhat strong; posterior femora thickened at 

 base, especially hind femora here with a dorsal hump; hind tibiæ 

 a little curved and a little thickened about the middle. Legs without 

 bristles; femora with long hairs below and posterior tibiæ on posterior 

 side. Claws and pulvilli strong, of about equal size in both sexes. 



