GRCESUS LATIPES. 41 



half black; the four anterior tarsi dull grey, darker at the point ; the 

 posterior pair black. Wings hyaline, with a small faint cloud a little 

 below the brownish stigma. 



The $ has the antenna3 faintly brownish beneath at the point ; and 

 the apex of the abdomen entirely brownish red; the legs are more 

 obscurely coloured than in the $ ; the posterior tibiae have a reddish 

 tinge in the centre. 



Length 3^ 3| lines. 



C. latipes is distinguished from the preceding species 

 by the smaller size of the cloud in anterior wings, 

 which in septentrionalis occupies the apical fourth of 

 both wings ; the posterior femora are generally reddish 

 beneath, but this is a character which is subject to 

 some variation. The amount of red on the abdomen 

 also varies, the last two, three, or four segments being 

 black in various specimens. The < is readily known 

 from that of septentrionalis by having part of the 

 sixth and the seventh and eighth entirely black ; the 

 eighth only being black in the other species. 



C. Brischldi (from Prussia) is very like latipes, but 

 has the pleurae less deeply punctured, and the tibiae 

 of the four anterior legs are entirely dirty white, while 

 in latipes they are brownish with the anterior and 

 blackish with the middle pair. Brischldi feeds on 

 Carpinus betulus. 



The larva is deep black, the skin in folds and 

 covered with short pubescence. The space sur- 

 rounding the spiracles, the second segment in front, 

 the four anterior segments, the twelfth on the belly, 

 and the legs, are shining yellow; the mouth is pale 

 yellow and the claws are brown, there being also a 

 brownish mark about them. When very young they 

 are pale brown. Length about 13 lines. 



In their habits the larvaB do not differ essentially 

 from those of septentrionalis, but they seem to confine 

 themselves entirely to birch. There is only, so far as 

 is known, one brood, which extends from July to 

 September, the imago appearing in May and June. 

 They pupate in the earth. As parasite they have 

 Perilissus filicornis, GT. 



C. latipes does not appear to be common. I only 



