LIST OF DIPTERA. 723 



is truncated ; bristle black, downy, stout, tapering, hardly more 

 than twice the length of the third feeler-joint, its second joint long, 

 more than twice the length of the first: chest black, with a very 

 slight brassy tinge, clothed with black hairs and bristles : scutcheon 

 reddish black : abdomen ferruginous, adorned with a broad black 

 stripe, clothed with black hairs and bristles ; legs black, clothed 

 with black hairs and bristles ; claws ferruginous, with black tips ; 

 foot-cushions dark tawny : wings gray, tawny at the base ; wing- 

 ribs ferruginous; veins tawny, pitchy towards the tips; tip cross- 

 vein forming au obtuse angle with the fourth longitudinal vein, 

 curved inward near the base, straight from thence to the tip, which 

 joins the border at some distance above the tip of the wing ; lower 

 cross-vein with two hardly perceptible curves, the one inward and 

 near the base, the other outward and towards the tip ; scales white. 

 LeDgth of the body 4-J — 5^ lines; of the wings 10 — 11 lines. 



a. St. Martin's Falls, Albany River, Hudson's Bay. Presented by 



G. Barnston, Esq. 



b. Nova Scotia. From Lieut. Redman's collection. 



Tachina algens, Wied. Auss. Zweif. ii. 285, 8. Echinomyia picea, 

 Desv. Essai Myod. 44, 2. Macq. Hist. Nat. Dipt. ii. 3, 372, 

 pi. 3, /. 4. 



a. Nova Scotia. From Lieut. Redman's collection. 



Group XXIV. Echinomyia, Dumeril. 



Tachina tepens, n. s. Nigra, capite aureo, thoracis lateribus scutel- 

 loque ferrugineis, abdomine nigro-rufo, antennis fulvis, pedibus 

 nigris, alis subfuscis basi et ad costam fulvis. 



Head gold colour, paler in the cavity for the feelers, somewhat 

 darker on the crown and between the eyes, beset above with black 

 bristles, clothed beneath with yellow hairs ; epistoma hardly promi- 

 nent ; no bristles on the sides of the face : sucker black, pitchy, and 

 beset with short tawny hairs at the tip : eyes pitchy : feelers tawny, 

 shorter than the face ; third joint much shorter than the second, 

 black above, slightly convex above and below, rounded at the tip ; 

 bristle pitchy, tapering, naked, rather more than twice the length of 

 the third feeler-joint, its first and second joints rather long, of nearly 

 equal length : chest black, clothed with black hairs and bristles, fer- 

 ruginous on each side ; scutcheon ferruginous, armed with some 

 long black spines: abdomen blackish red, clothed with short black 

 hairs, paler towards the tip, which is armed with black spines : legs 

 black, clothed with black hairs and bristles ; foot-cushions tawny : 



