214 THE CANADIAN ENTOMOLOGIST. 



with four triangular, white, basilar spots ; abdomen underneath with a 

 double series of triangular white spots on each side, the outer ones elon- 

 gated : sides of the breast hairy ; mesosternum suborbicular, hairy ; legs 

 luteous ; tarsi and base of the cubits, brown-black. [This beautiful insect, 

 now included in the genus Euryomia Burm.,is taken occasionally, but not 

 commonly, in Ontario.] 



1 86. Trichius Bigsbii Kirby. — Length of body 7 lines. Taken in 

 -Jganada, near Lake St. Clair, by Dr. Bigsby. 



[137.] This species exhibits the habit and general aspect of T. fasci- 

 atus, but it is larger and less hairy. Body obovate, black, covered more 

 or less with tawny longish hairs. Head quadrangular ; nose reflexed, 

 emarginate ; antennae and palpi luteous, black at the tip ; prothorax 

 trapezoidal, narrowest anteriorly, sides rounded or subobtusangular, pos- 

 teriorly with an obsolete sinus near each angle ; scutellum short, rounded 

 at the apex : elytra without hairs, covered as it were with a bloom ; luteous 

 with a black margin and nine black spots — viz. one large one at the 

 shoulders, seven in the disk arranged transversely 2, 3, 2, and one larger 

 than the re^t on the apical tumour ; the humeral and apical spots are 

 glossy : three tawny-yellow mealy spots, the intermediate one straight and 

 longitudinal, and the lateral ones sinuated and oblique, mark the podex : 

 the tibiae and tarsi of the four anterior legs are deep ferruginous ; cubit 

 bidentate, [Synonymous with Gxorimus maculosus Knoch. Taken, 

 but rarely, in Canada.] 



187. Trichius assimilis Kirby. — Length of body 4^ — 5 lines. 

 Taken in Lat. 65 . ; in Nova Scotia by Capt. Hall ; and in Massachusetts 

 by Dr. Harris. 



[138.] Body obovate, black, covered more or less with long yellowish 

 hairs. Head punctured ; nose reflexed, emarginate ; stalk of the antennae 

 testaceous, scape and knob black ; palpi dusky : prothorax punctured, less 

 hairy in the disk, not channelled : elytra black, very short, depressed next 

 the suture with an intermediate ridge; at the base is a' large pale-yellow 

 spot common to both elytra, from which run a pair of narrow, white, 

 mealy bands, which nearly reach the external margin, and a white mealy 

 stripe adjoining the suture also runs from the same spot to the apex of the 

 elytrum : the podex is covered with long yellowish hairs, so thick on the 

 sides as almost to conceal the oblong white mealy spot common to the 

 subgenus ; legs black. 



N. B. — In the specimen taken in the Expedition, the white mealy 

 stripe next the suture appears to have been rubbed off and and is replaced 



