THE CANADIAN ENTOMOLOGIST. 21 5 



by a continuation of the pale spot. [Previously described as T. affinis 

 Gory. Taken in Canada.] 



188. Trichius rotundicollis Kirby. — Length of body 5^2 lines. 

 Taken in Nova Scotia by Capt. Hall. 



Body obovate, black ; covered, particularly underneath, with longish 

 pale hairs. Llead very thickly punctured ; nose reflexed, emarginate ; 

 stalk of the antennae, excluding the scape, testaceous : prothorax subor- 

 bicular, with the segment of a circle taken out next the head ; very thickly 

 punctured, channelled, sprinkled with short yellowish hairs ; at the side of 

 each of the four angles is a mealy-white spot : the elytra next the lateral 

 margin have two transverse mealy-white streaks or bands, which are con- 

 tinued towards the suture by a broader, naked, ferruginous, obscure band; 

 just below the scutellum, on each elytrum, is another mealy stripe, and 

 parallel with the suture is an obscure, naked, ferruginous one : podex 

 hairy with the ordinary mealy pale spots very conspicuous ; it is sculptured 

 with transverse undulated lines : cubits robust with two stout teeth : a 

 mealy spot marks the base of the posterior legs. [Synonymous with T. 

 piger Fabr. : taken commonly in Ontario.] 



189. Trichius viridans Kirby. — Length of body 4| lines. A 

 single specimen taken in Canada by Dr. Bigsby. 



In the markings of its elytra this species agrees precisely with that last 

 described, but the upper side of the body, especially the head and pro- 

 thorax, is green ; the latter is of a different shape and less thickly punc- 

 tured ;" and the cubit and its teeth are less robust : the podex also is more 

 hairy. These can scarcely, all of them, be mere sexual distinctions. 



It seems intermediate between T. rotundicollis and T. viridulus. [A 

 variety of T. affinis Gory.] 



[140.] 190. Trichius rugosus Kirby. — Length of body 10^ — 13 

 lines. Taken in Nova Scotia by Dr. Mac Culloch and Capt. Hall. 



Body rather glossy, dark pitch-colour, naked above with a few r scat- 

 tered hairs on the underside and on the legs. Head above plane, thickly 

 covered with impressions and punctures that anastomose and run into 

 each other, in some specimens leaving here and there some elevated, 

 levigated, narrow spaces : nose anteriorly transverse, reflexed : prothorax 

 with a longitudinal posteriorly abbreviated channel ; sides obtusangular ; 

 surface covered, less thickly in the disk, with large, and often confluent, 

 punctures : scutellum an isosceles triangle, channelled, with a few scattered 

 large punctures on each side : elytra indistinctly farrowed, confluently and 

 irregularly wrinkled, wrinkles marked with shallow indistinct punctures, 



