THE CANADIAN ENTOMOLOGIST. 



219 



interspaces oi Ihieatiis are uniseriately granulate-punctate, and the declivity 

 indistinctly pilose. The lateral stride of the elytra are impressed in 

 betuh? ; m /ineaths oWiW the last is distinctly impressed. The male of 

 betulce has a distinct carina in the depth of the frontal impression, and the 

 hairs of the margin of the frontal impression and also of the anterior part 

 of the pronotum are much longer than in lineatus. The male of lineatiis 

 has the carina usually faintly developed, and often represented by an 

 anterior and posterior tubercle. The hind tibia oi bet nice has a fringe of 

 very long slender erect and wavy hairs on the front margin ; this fringe is 

 represented in lineatus by two or three of the long hairs. 



Fig. 14. — T. betula;, n. sp., hind leg:. 



Fig 15. — T. lineatus Oliv., hind leg-. 



The colour markings of betulce seem to be quite distinct from those 

 of lineatus. In betulce the pronotum is dense black, and each elytron has 

 the side and suture black, with a broad, dusky yellow band down the 

 middle ; usually the two black borders meet at the tip. There is consid- 

 erable variation in the width of these black and yellow bands, but never a 

 bright coloration nor an approach to the typical markings of lijieatiis. 

 In Ihieatus the pronotum has the hind margin yellow or reddish. Each 

 elytron has a black band along the side, the suture, and down the middle, 

 with two yellow bands intervening, one between the lateral black border 

 and the median black band, the other between the median black band 

 and the black sutural border. The coloration is much brighter in lineatus. 



