218 



THE CANADIAN ENTOMOLOGIST. 



gradually widened from the nearly truncate, narrow base to near the apex, 

 which is broadly rounded. 



Fig. 12. — TrjpoJendron betu^as, n. sp., antenna, 



Fig. 13. — T. llneatus Oliv., an'.enna. 



TJie male. — In the male the front is deeply and broadly concave, as 

 in lineatiis, with a median carina and the side margin of the depression 

 fringed with long, erect, yellow hairs. The depression is very sparsely 

 and minutely granulate-punctate, with inconspicuous setse. The pronotum, 

 from above, is wider than long, truncate before and behind, with the sides 

 and angles slightly rounded. The asperations are but feebly developed. 

 The hairs of the anterior half are long and curved backwards, and become 

 shorter on the sides towards the base. 



The sculpture of the elytra is often coarser in the males, with the 

 striae more distinct, and the declivital granules larger. 



The tibia of the fore leg differs from that of the female in being more 

 slender until near the tip, where it is suddenly widened. The fringe of the 

 front margin is longer and very thick distally, without the distal tubercles. 

 The hind tibiae are rather more slender; hind margin toothed as before ; 

 outer face with very long stout hairs, longer and tuberculate at the base 

 on the hind margin j front margin nearly straight, fringed with very long, 

 .«:lender, erect, wavy hairs ; a row of spine-like hairs acro.s the inner face 

 as in the female, but more strongly developed. The first three segments 

 of the tarsi are much stouter, flattened, and with the hairs from the under 

 side longer than in the female. 



This species differs from liiieatiis in the colour markings to be 

 described below, and as follows : The declivity oi betulce is distinctly hairy 

 and the declivital interspaces are confusedly punctured ; the declivital 



