THE CANADIAN ENTOMOLOGIST. 129 



INSECTS OF THE NORTHERN PARTS OF BRITISH AMERICA. 



COMPILED BY THE EDITOR. 



From Kirby's Fauna Boreali- Americana : Insecta. 



(Continued from Page 117.) 



305. Donacia cupr.ka Kirby. — Length of body 4^ lines. Taken 

 in Canada by Dr. Bigsby [also on Lake Superior.] 



[226.] Body above copper-coloured, glossy; underneath covered 

 with a thick coat of decumbent pile of a cinereous colour, glittering in 

 certain lights. Head downy, channelled ; mouth and palpi rufous ; man- 

 dibles and antennae black ; prothorax rather wider than long, very 

 minutely, thickly and confluently punctured and wrinkled ; channelled, 

 with a pair of impressions on each side, anterior tubercles not prominent ; 

 scutellum downy j elytra very grossly punctured in rows ; a single anterior 

 impression near the suture ; truncated at the apex ; three intermediate 

 ventral segments of the abdomen have a yellow margin j legs obscurely 

 rufous ; thighs bronzed in the middle ; posterior thighs with a minute 

 tooth near the apex. 



306. Donacia hirticoli.is Kirby. — Length of body $j4 lines. A 

 single specimen taken in Lat. 65 . 



Body underneath covered with a thick coat of decumbent pile 

 resembling satin and shining like silver. Head hoary from inconspicuous 

 hairs, most minutely and confluently punctured with a slight interocular 

 channel with an obtuse ridge on each side ; antennae with the second and 

 third joints equal in length ; labrum glittering with silver pile ; prothorax 

 longer than wide, hoary from inconspicuous down, most minutely and 

 confluently punctured, channelled, sides subimpressed, anterior tubercles 

 flat ; scutellum large, levigated ; elytra black, punctured in rows, whose 

 interstices are wrinkled ; posterior thighs with a single short obtusangular 

 tooth. 



This pretty species comes near D. bidens Oliv., which I always find on 

 Potamogefon natans, but it is sufficiently distinguished by its black thorax 

 hoary from down, and legs without any red. 



[Synonymous with D. rudicollis Lac. Taken on Lake Superior.] 



