424 THE CANADIAN ENTOMOLOGIST 



cylindrical or somewhat spindle shaped, often more or less arched, 

 clothed beneath with long, fine hairs that become longer and 

 coarser posteriorly, forming a sort of beard ; anterior face with three 

 rows of bristles, those of intermediate row shortest, and not de- 

 veloped distally; posterior face without ventral row of bristles; 

 tibia more or less curved; anterior and posterior faces each with a 

 beard of long, coarse, black hairs on about distal three-fourths, 

 latter much the stronger: tarsus usualK" somewhat shorter than 

 tibia, fourth segment at least one-half fifth. Middle coxa at least 

 dorsalh', with more than a single row of bristles, though the ad- 

 ditional bristles may be rather slender: femur clothed beneath on 

 posterior proximal half or more with long hairs; anterior ventral 

 row of short, scattered bristles complete, posterior row represented 

 only by "comb" extending proximally to the long hair: sub- 

 mesotibial bristle present, often obscured by coarse vestiture that 

 covers tibia ventrally on dfstal half or thereabouts and becomes 

 beard-like anteriorly and posteriorly. Ventral surface of anterior 

 coxa clothed completely with bristles which are often separable 

 into three irregular rows, one at each side and one intermediate 

 that is usually less complete: vestiture of tibia longest ventrally, 

 posteriorly and distally. 



Chdtotaxy. — Anterior doisoccnlrals short and usually stout 

 but longer than vestiture of pra?scutum; acrostichals absent or but 

 slightly difl^erentiated anteriorly; inner presuturals short and 

 slender: last two pairs of postsutural dorsocentrals strong, anterior 

 to these several weak pairs that vary greatly in length; prescutellar 

 acrostichals present: scutellar apicals present: three sternopleurals 

 lower sternopleura with a single row of bristles, otherwise clothed 

 with long hairs which, in large specimens, become quite coarse. 



Abdomen. — Somewhat conical or oval; clothed above with 

 short, reclinate bristles, beneath with longer, more erect hair. 

 Ventral plates, as a whole, with their sides converging posteriorly, 

 their shape and size variable; vestiture decreasing in length pos- 

 teriorly, that of third plate shortest and erect. Posterior margin 

 at fourth notum, especially dorsally, may be dull orange. 



ChcEtotaxy. — Second segment without marginal bristles; third 

 with two and usually with slender, decumbent ones between these 



