262 



THE CANADIAN ENTOMOLOGIST. 



small, black spots inda^ Linn. 



Thorax naked and polished above, green with yellow margin, elytra 

 brownish red, with green surface lustre in places. . .fulgida, Fabr. 



Cremastochilus, Knoch. 



The only recorded species is C. /uirrisii, Kirby, a rather elongate and 

 flattened, black insect, .40 inch in length, the surface 

 shining. The thorax has a very peculiar appearance, 

 because of the angles being separated from the disk 

 by rather deep impressions. The mentum is large 

 and somewhat cupuliform, with a rather deep and 

 broad notch behind. We figure it after Dr. Horn 

 (Fig. 2>Z). 



OSMODERMA, Lcp. 



This genus includes two very large, dark coloured 

 beetles, with the thorax much narrower than the elytra. 

 They may be known apart thus : '^' ^''' 



Elytra nearly smooth, polished. . .eremicola, Kncch. 

 Elytra rough, scabrous, thorax v/ith a rather deep 



channel scabra, Beauv. 



Fig. 34 represents O. scabra. 



Gnorimus, Lep. 

 G. maculosus, Knoch, is the only species. It re- 

 ^ sembles Trichius, but the elytra are yellowish (luteous) 

 with numerous black spots. 



Trichius, Fabr. 



Fig. 34. Three species are on the Canadian lists ; all are to 



be found on flowers, especially wild rose and Spircea, during the heat of 

 the day, and fly readily when disturbed. The elytra are usually marked 

 with transverse white bands. They may be tabulated as follows : 

 A. Elytra rufo-testaceous, without transverse bands or velvety lateral 



space bibe?is, Fabr. 



AA. Elytra with white transverse bands and lateral velvety spaces. 



. Second and fourth elytral intervals moderately densely punc- 

 tate -p^ger, Fabr. 



Second and fourth intervals very sparsely punctate. ..^///V, Gory. 

 All are only moderate-sized insects, with rounded thorax, narrower 

 than the elytra, and very long legs. 



