|g4 LIST OF DIPTERA. 





black Head clothed with hoary tomentum and down, more than 

 twice broader than long. Palpi testaceous, brownish above, except 

 at the base. First and second joints of the antennae red; third red 

 towards the base, its horn small, forming a nearly right angle. 

 Thorax brownish black, clothed on each side with black hairs ; five 

 dorsal hoary stripes, and a tawny callus before each wing Abdo- 

 men luteous tawny, with a black stripe, which is dilated at the base 

 and at the tip, and is interrupted on the hind border of each seg- 

 ment ; three testaceous spots on the hind border of each segment. 

 Tibise, posterior tarsi towards the base and tips of the femora tawny ; 

 hind tibiffi with a short fringe of black hairs on the outer side. 

 Wings grayish brown, with a slight darker brown band across the 

 base of the discal areolet. Stigmadark brown -veins black ; first 

 branch of the cubital vein simple, forming a slightly obtuse angle 

 near its base; subanal vein joining the anal at some little distance 

 from the border. Halteres tawny, black towards the tips, which are 

 testaceous. Length of the body 6-7 lines; of the wings 13-15 

 lines. 

 a— f Arctic America. Presented by Sir John Richardson. 



9-h. ? 



122. Tabanus bicolor. 



Glauco-olivaceus ; antenna, pedes et abdomen ferruginea, hoc vitta 

 olivacea. 

 Tabanus bicolor, Wied. Dipt. Exot. i. 96, 58; Auss. Zweifi. i. 188, 



115. 

 North America, 



123. Tabanus lineola. 



Niger • thoracis latera ochracea ; abdomen albo trivittatum, lateri- 

 busmelleis; tibia ferruginea ; aim limpida. 



Tabanus lineola, Fabr. Macq. Dipt. Exot. i. 1, 146, 49. 



Eyes of the male hairy, of the female bare. 

 North America. 



124. Tabanus pallidus. ( 



Testaccus, subtus albido pilosus ; thoracis macula et scutellum 

 fusca ; alee obscura, immaculate. 



