158 THE CANADIAN ENTOMOLO&IST. 



sions ; sides and base margined/ margin reflexed ; elytra less glossy than 

 the rest of the body, minutely^ but not .conspicuously,, punctured. 

 [Belongs to the family Malachiidte.'] 



[254.] V.— HYMENOPTERA. 



FAMILY CIMBICIDjE. • 



351. Cimbex femorata Linn. — Length of body 10 lines; expansion 

 of wings 21 lines. A single specimen taken in Lat. 65 . 



°_ . Body very black, hairy. Antennae yellow, brown at the base ; 

 legs blue-black ; tarsi yellow.; wings hyaline with yellow nervures, brown 

 at the tip, with a brown cloud in the middle areolet adjoining the costa. 



352. Trichiosoma Triangulum Kirby. — Length of body 9 lines. 

 A single specimen taken in Lat. 65 . Another was also sent me from 

 Canada by Dr. Bigsby. 



[255.] Body black, shining, covered with soft and woolly whitish 

 hairs, punctured more or less. Head, excluding the mandibles, depressed, 

 orbicular, as wide as the trunk ; mandibles crossed, very sharp, blafck ; 

 upper lip subpentagonal, flat with a longitudinal elevation in the middle, 

 hairs on this part black ; anterior margin Of the nose wavy, emarginate in 

 the middle ; antennae wjth.the fourth, fifth, a^id sixth joints testaceous ; 

 three eyelets behind the antennae arranged in a triangle ; eyes oval, pro- 

 minent ; vertex square, marked out by a ridge on each side ; trunk 

 subglobose ; prothorax with a longitudinal furrow ; thighs and coxae 

 black-blue ; under a strong magnifier beautifully and most minutely 

 reticulated, which gives them a silky lustre ;' the rest of the leg is testa- 

 ceous ; the two posterior pair of thighs are thicker than the others and 

 armed at the apex with a short tooth on : each side, between which is a 

 cavity to receive the shank when folded : tarsi with a sucker underneath 

 at the apex of the four first joints ; wings testaceous with piceous ner- 

 vures, and a cloud ,at the tip ; abdomen ferruginous with a dorsa 

 triangular black spot, extending from the base towards the apex, but not 

 entering the last segment ; the basilar ventral segments are spotted with 

 brown. 



[Found in Canada and Colorado.] - . 



353. Trichiosoma lucorum Linn. — Length of body 7 line's ; expan- 

 sion of wings 15 lines. A single specimen taken in Lat. 65 . 



