THE CANADIAN ENTOMOLOGIST. Ili7 



vated and without a well-defined pygidial area, the lateral carinje 

 being never highly elevated ; ocelli in an obtuse triangle . • . . . 8. 

 Mandibles at apex tridentate ; pygidium narrowed towards apex, 

 subogival, and deeply channelled or excavated, with a well- 

 defined narrowed pygidial area, the lateral carin^e high ; if 

 triangular, which is rare, excavated. 



Mandibles without a tooth within towards base 7. 



Mandibles with a distinct tooth or blunt process within to- 

 wards base 2. 



2. Superorbital fovefe wanting or indicated only by a slight glabrous streak 



or depression near the upper border of the eyes 4. 



Superorbital foveas sharply defined, long, linear or oblong. 



Abdomen not strongly punctate, except sometimes the first seg- 

 ment ; smooth, polished, impunctate or coriaceous, or finely, 

 sparsely, minutely or microscopically punctate ; the dorsal seg^ 

 ments, except sometimes the first, not constricted at the sutures, 



nor delicately margined at apex 3. 



Abdomen distinctly and more or less strongly punctate, the dorsal 

 segments more or less constricted at sutures and usually delicate- 

 ly margined at apex, or at least some of the basal segments are 

 margined. 



Thorax rather coarsely strongly punctate, the punctures more 

 or less confluent, and sometimes with strife or fine acicu- 

 lations on the mesonotum posteriorly, the scutellum and the 

 nieso- and metapleura ; metanotum reticulated or with 

 sharply defined strife ; clypeus with a median ridge or carinas 

 and quadrately produced medially; the apex of same being 

 truncate or subraarginate ; head large, quadrate, rather 



coarsely confluently punctate Solenius, Lepel. et Br. 



[Type S. interruptus, L. et Br.J 



3. Head and thorax coarsely sculptured or coarsely rugoso-punctate, the 



mesonotum posteriorly, the scutellum and the mesopleura supe- 

 riorly somewhat striate ; metapleura opaque, longitudinally acicu- 

 lated ; abdomen with the first segment rather strongly punctate, the 

 following smooth, at the most sparsely punctate ; clypeus with a 

 strong median ridge, which is strongly narrowly (not broadly 

 as in Solenius) produced beyond the anterior margin, while on 

 each side of it, or between the production and the eyes, is a 



