LIST OF DIPTERA. 789 



the tip, thrice the length of the second joint; bristle black, twice the 

 length of the third joint, its first joint obsolete ; second short ; third 

 stout for one-third, of the length, very slender from thence to the tip ; 

 chest with a yellowish-tawny covering, very indistinctly striped ; 

 breast dark tawny ; scutcheon armed with a few long black spines : 

 abdomen long-obconical, much longer than the chest, adorned with 

 three pale tawny bands on the fore borders of the segments ; third 

 band much broader than the preceding ; legs black, thickly clothed 

 with black hairs and bristles ; thighs and shanks slightly covered with 

 hoary bloom ; foot-cushions tawny ; wings slightly gray, yellowish 

 white at the base ; wing-ribs ferruginous; veins black, ferruginous 

 towards the base ; tip cross-vein forming a slightly obtuse angle 

 with the fourth longitudinal vein, very slightly curved inward, join- 

 ing the border far above the tip of the wing ; lower cross- vein with 

 two very slight curves, the lower inward, the other outward, but 

 hardly perceptible ; scales dingy with white tawny borders. Length 

 of the body 6 lines ; of the wings 12 lines. 

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



Tachina irrequieta, n. s. Nigra, fulvo tecta, thorace subvittato, 

 abdominis vitta et segmenlorum marginibus posticis nigns, pec- 

 tore ventreque canis, palpis ferrugineis, antennis pedibusque 

 nigris, alis sublimpidis bast Jiavo-albis. 



Body black, clothed with black hairs and bristles : head with a 

 pale yellow covering, thickly clothed behind and beneath with yel- 

 lowish white hairs ; a black stripe proceeds from the feelers towards 

 the eyelets on approaching which it ceases ; sides of the face fringed 

 with bristles for two-thirds the length from the base; epistoma 

 slightly prominent : eyes dark red, not hairy : sucker black, clothed 

 with tawny hairs; palpi ferruginous, beset with black bristles: feelers 

 black, nearly as long as the face ; second joint ferruginous towards 

 the tip ; third joint of the male more than twice the length of the 

 second, linear, truncated at the tip, third joint of the female nearly 

 twice the length of the second, rather deep, slightly increasing in 

 depth from the base to the tip, which is obliquely truncated ; bristle 

 like that of the preceding species : chest with a dull pale tawny 

 covering, which is indistinctly striped ; breast more hoary ; scutcheon 

 armed with some long black spines: abdomen oval, not longer than 

 the chest, adorned with a pale tawny covering, which is partly inter- 

 rupted on the hind borders of the segments, and by a stripe along 

 the back; underside quite hoary: legs black, clothed with black 

 hairs and bristles ; thighs and shanks with a slight hoary tinge ; 

 foot-cushions tawny : wings nearly colourless, yellowish white towards 

 the jbase ; wing-ribs tawny ; veins black, tawny towards the base ; 



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