DONACIADiE. 225 



DESCRIPTION. 



Body black-blue, cloathed underneath with pile, in certain lights, glittering like silver. Antenna; 

 black : tubercles of the prothorax prominent : elytra with an impression near the suture : last dorsal 

 segment of the abdomen emarginate : thighs very thick, bronzed, posterior one with a stout tooth. 



This species comes very near D. sericea, but it is sufficiently distinguished by its deeply notched 

 podex, and the silver pile that cloaths its body underneath, which in that species has a golden lustre. 



(304) 5. * Donacia proxima. Proximate Donacia. 



D. (proxima J femoribus bidentatis, dente altero minuto ; supra atro-violacea nitida, capite subceneo ; elylris punctis viridi-inau- 



ratis ; subtus holosericeo-argentea. 

 Proximate Donacia, thighs bidentate with one tooth minute, above dark violet, glossy ; head rather bronzed : punctures of 



the elytra green-gilt : body underneath covered with a satin silver pile. 



Length of the body 5 lines. 



Taken in Canada by Dr. Bigsby. 



DESCRIPTION. 



Body a little flattened, covered underneath with a dense coat of glittering silver pile resembling 

 satin. Head a little bronzed, channelled between the eyes, minutely punctured; palpi testaceous; 

 antennas entirely black : prothorax in the disk dark violet and channelled, sides bronzed and im- 

 pressed ; anterior tubercles not prominent : scutellum bronzed : elytra nearly black with a slight 

 tint of violet, punctures green-gilt, interstices of the rows not wrinkled ; an anterior impression near 

 the suture; rounded at the apex: posterior legs long, with thighs somewhat curved, attenuated at 

 the base, armed at the apex with two teeth placed consecutively, the first long, slender, and acute ; 

 the last wide, short, and denticulated posteriorly. 



This species is nearly related to D. crassipes Fab. but the antenna; and the legs are entirely 

 black, the teeth on the posterior thighs are not equal. 



(305) 6. * Donacia cuprea. Copper-coloured Donacia. 



D. (cuprea J supra cuprea, nitida ,• subtus ex pube densa cinerea ; antennis nigris ; pedibus obscure rufis, femoribus posticis uni- 



dentatis .- prothorace subtransverso. 

 Copper-coloured Donacia, above copper-coloured, glossy ; underneath with a thick coat of cinereous pile; antennae black ; 



legs obscurely rufous, posterior thighs unidentate ; prothorax subtransverse. 



Length of the body 4i lines. 



Taken in Canada by Dr. Bigsby. 



2 G 



