THE CANADIAN ENTOMOLOGIST. 275 



Legs of moderate size, luteous, with black and pale hairs and 

 spines ; dotted with piceous at bases of the spines, these dots sometimes 

 coalescent in places ; tibiae piceous at bases and apices, each with a 

 transverse piceous line on basal half externally. Tibial spurs longer than 

 first tarsal joint, slightly curved, rufo-piceous ; spurs of anterior and 

 middle tibije longer than tliose of posterior. Tarsal joints piceous at 

 their apices, the third and fourth especially so ; claws a little more than 

 half the length of last tarsal joint, moderately curved, rufo-piceous. 



Wings of moderate size, hyaline. Venation hairy. Pterostigma 

 whitish, fuscous on inner side. Apical third or more of veins of inter- 

 costal series forked. Veins light brown or fuscous, interrupted irregularly 

 with paler ; the subcostal vein darker, with a distinct luteous mark 

 between each transversal. 



Anterior wings marked as in B. 7iiger*, but the markings less 

 extended and light brown in colour. Posterior wings almost immaculate. 

 Posterior borders of both wings fringed with fine hairs. 



Female. — Length, 31 mm.; expanse of wings, 58.5 mm.; greatest 

 width of anterior wing, 6.3 mm.; length of antenna, 6 mm. 



Antennae more clavate than in male ; first joint luteous behind, the 

 following joints luteous at articulations, especially the basal ones. The 

 luteous markings are more extended and distinct than in the males. A 

 luteous spot or band is present between the antennae. 



Anterior fuscous band of the vertex continued posteriorly along the 

 longitudinal median furrow ; the posterior band appears like an irregular 

 group of more or less coalescent fuscous spots, divided at the median 

 furrow. 



Abdomen somewhat shorter than wings, marked similarly to that of 

 male, but there is little luteous on basal segments above except at middle 

 of segments and at their articulations, the middorsal fuscous line hardly 

 apparentf. 



Tip of abdomen luteous, clouded with fuscous ; clothed above with 

 black hairs ; superior parts split ; inferior parts beset with coarse black 

 spines ; below two small cylindrical luteous appendages, three times as 

 long as broad, with some very long black hairs or bristles. 



Wing markings and veins somewhat darker than in males. 



*Can. Ent., XXX., 5, 1898, p. 136! 



tTwo of the females (co-types) have this line quite apparent, especially the 

 specimen from Los Angeles, California, collected by Mr. 1). W. Coquillett. 



