THE CANADIAN ENTOMOLOGIST \5^ 



hair. Hairs covering anterior spiracle dark brown basally becom- 

 ing lighter toward tips; those of anterior margin of posterior spiracle 

 dark brown; those of spiracular cover light yellowish brown with 

 yellowish tips. Epaulets dark. 



Wings.^Bend of a fourth vein a right angle; anterior cross- 

 vein more basal than end of first longitudinal ; costal spine vestigial ; 

 third vein bristly; section III of costa about one and one-fourth 

 times section V; alulae fringed with hair; calypters whitish, margins 

 fringed with white hair. 



Legs. — Dark; all tarsi distinctly shorter than their respective 

 tibiae. Posterior trochanter without "brush;" femur cylindrical, 

 arched, clothed beneath wdth long hair that forms a beard posterior- 

 ly; anterior face with but two rows of bristles, an upper and an 

 intermediate, latter not developed distally, of lower row a single 

 distal bristle present; posterior face without ventral row of bristles; 

 tibia curved, anterior and posterior faces each with a very thick 

 beard of very long, coarse hairs extending full length of tibia, 

 latter somewhat the stronger; fourth tarsal segment at least one- 

 half fifth. Middle femur clothed beneath nearly to distal ex- 

 tremity, especially posteriorly, with long hair; anterior ventral 

 row of short bristles complete, posterior row represented only by a 

 few short bristles on about distal fifth; tibia clothed beneath on 

 its distal half or slightly more with long, dense hair that becomes 

 coarser and beard-like anteriorly and posteriorly; submesotibial 

 bristle absent. Ventral surface of anterior coxa with an irregular 

 row of bristles at each side and anteriorly with others between 

 them; tibia with a beard-like line of short hairs distally on posterior 

 face (probably absent in small specimens). 



Chaetotaxy. — Anterior dorsocentrals slightly reclinate, not 

 weaker than anterior postsuturals; anterior acrostichal absent; 

 last two pairs posterior dorsocentrals strong, anterior to these 

 several pairs that are mostly very weak and scarcely distinguish- 

 able from vestiture of scutum; prescutellar acrostichals present; 

 scutellar apicals present; three sternopleurals, middle one weak; 

 lower sternopleura with a single row of bristles, otherwise clothed 

 with long hair. 



Abdomen. — Somewhat conical; clothed above with short, re- 

 clinate bristles, beneath with somewhat longer, more erect hair. 



