1106 LIST OF DIPTERA. 



Ephydra oscitans, n. s., Barnstoris MSS. Fusca, mbtus cana, 



palpis antennisque nigris, pedibus nigro-cinereis, alarum fusca- 



rum maculis plurimis limpidis ad costam quadratis. 



Body hoary beneath : head and chest dark brown, beset with 



black bristles : eyes pitchy : sucker, palpi, and feelers black ; third 



joint of the feelers conical, longer than the second ; bristle bare 



thrice the length of the third joint : legs black, tinged with gray : 



wings dark brown, adorned with numerous colourless spots, which 



along the fore border are more distinct than elsewhere, and of a nearly 



square shape ; wing-ribs and veins black ; poisers pitchy. Length 



of the body f line ; of the wings 1^ line. 



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

 G. Barnston, Esq. 



Ephydra. octo-notata, Barnston s MSS. Fusca, facie lateribus al- 

 bidis, thorace vittis duabus canis ornato, palpis piceis, antennis 

 nigris, pedibus nigro-cinereis, alis cinereis sublimpido quadri- 

 maculatis. 



Body brown : head and chest beset with a few bristles : 

 sides of the face whitish : eyes red ; facets of the fore part a little 

 larger than those elsewhere : sucker and palpi pitchy : feelers 

 black, shorter than the face ; third joint conical, a little longer 

 than the second ; bristle stout, downy, tapering, rather more than 

 twice the length of the third joint : chest slightly metallic, adorned 

 with two hoaiy stripes : legs black, tinged with gray ; under side of 

 feet and of fore shanks clothed with ferruginous down : wings dark 

 gray, each adorned with four almost colourless spots, one beneath 

 the second longitudinal vein, and very near another which is beyond 

 the middle cross- vein ; the third and the fourth are on either side of 

 the lower cross-vein ; wing-ribs and veins black ; tip of the second 

 longitudinal vein curved upward to the fore border ; fifth longitudi- 

 nal vein slightly curved upward till it joins the lower cross-vein, 

 whence it proceeds to the hind border, forming a very obtuse angle ; 

 lower cross-vein straight, upright, parted by four times its length 

 from the middle cross-vein and from the end of the fourth longitu- 

 dinal vein, and by more than half its length from the end of the 

 fifth longitudinal vein ; poisers pitchy. Length of the body f line ; 

 of the wings 1-J line. 



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

 G. Barnston, Esq. 



