186 LIST OF DIPTERA. 



with short black bristles ; sucker piceous : feelers ferruginous ; first 

 and second joints beset with black hairs ; third black, except near 

 the base, where it has a very slight angle : chest brown, with three 

 indistinct hoary stripes, tawny on each side : breast hoary, clothed 

 with long white hairs : abdomen dark ferruginous, mostly brown 

 towards the tip, thinly clothed with tawny hairs : hind borders of 

 the segments tawny ; a large brown spot on the first, and a small 

 one on the second segment : legs ferruginous, clothed with short 

 black hairs ; hips and thighs gray, clothed with pale tawny hairs : 

 wings slightly gray ; veins ferruginous ; brands yellowish brown, 

 very narrow ; poisers tawny, their knobs piceous with ferruginous 

 tips. Length of the body 5 lines ; of the wings 10 lines. 



Tabanus argentifrons, n. s., fern. Fulvus, capite subtus albo, thorace 

 fusco quadrivittato, pectore cano, abdomine flavo-albido vittato, 

 apice ferrugineo, pedibus ferrugineis, femoribus basifulvis, alls 

 subcinereis fulvo subvittatis. 



Head tawny, white and clothed with long white hairs beneath : 

 palpi tawny ; lancets and sucker piceous : feelers tawny ; first and 

 second joints beset with hairs ; third ferruginous, armed with a 

 curved horn at the base : chest tawny, with four pale brown stripes ; 

 breast hoary, clothed with white hairs : abdomen tawny, clothed 

 with short black hairs, ferruginous towards the tip ; hind borders of 

 the segments yellowish white ; under-side clothed with short tawny 

 hairs : legs ferruginous, clothed with short black hairs ; hips hoary ; 

 thighs tawny at the base ; fore and middle shanks clothed with sil- 

 very hairs at the base • wings with a gray tinge, slightly tawny along 

 the veins, more so at the base, and most so on the fore borders ; 

 veins ferruginous, darker towards the tips ; poisers tawny, with 

 bright pale yellow knobs. Length of the body 6 lines ; of the wings 

 12 lines. 



Tabanus constans, n. s., fern. Ferrugineus, thorace piceo quinque- 

 vittato, abdominis segmentis fulvo fasciatis, pedibus fulvis, alis 

 einereis. 



Head dark ferruginous, clothed beneath with bright tawny 

 hairs : eyes piceous : mouth tawny ; sucker piceous : feelers bright 

 tawny ; third joint but slightly widened into an angle : chest and 

 breast ferruginous, the former with five piceous stripes : abdomen 

 ferruginous ; hind borders of the segments tawny and fringed with 

 yellow hairs : legs tawny ; fore hips pale tawny : wings gray : veins 

 piceous, tawny towards the base ; poisers yellow, with tawny knobs. 

 Length of the body 3 lines ; of the wings 6 lines. 

 «. New Holland, Presented by the Haslar Hospital. 



