74 THE CANADIA.N ENTOMOLOGIST. 



CcELAMBUS, Thorn 



Several species belonging to this genus may be known by the pres- 

 ence of a ligula on the inferior surface of the elytra near the extero- 

 posterior angle ; it seems to render possible a more perfect fitting together 

 of the elytra and the ventral segments and may easily be seen by raising 

 the wing-case, in colour most of the Coelambi are pale above with more 

 or less distinct black markings. Beneath the body is convex, sometimes 

 much so. 



A. Body beneath rufous, very convex. Head and thorax rufous, elytra 



brownish, or with distinct irregular pale markings (.12 to 



.13 in.) iiicEqualis.. Fabr. 



AA. Body black beneath, less convex. 



b. Larger (.20 to .22 in ), deeply or coarsely punctate. Colour 



variable impressopunctatus, Schall. 



bb. Smaller (.11 to .17 in.). 



c. Thorax hardly narrower than elytra. Piceous; head, feet and 



thorax testaceous, the latter infuscate at base and apex (.11 

 in.) iurbidus, Lee. 



cc. Thorax distinctly narrower than the elytra. 



Oval, convex, testaceous above, elytra with fine and coarser 

 punctures intermixed (.13 in.) ovoideiis, Lee. 



Longer, less convex, piceo-testaceous above. 



Thorax and elytra hardly infuscate (.15 m.) patnielis, Lee. 



Thorax infuscate at middle, elytra at apex (.17 in.) 



nubiltis, Lee. 



Deronectes, Sharp. 



The two Deronedes recorded from the Canadian fauna are densely 

 punctured, opaque pubescent insects. They separate thus : 



Oblong-ovate, legs, antennfe and body beneath rufous, thorax with 

 front margin, base and two large basal spots black, elytra with 

 six or seven more or less interrupted and confluent vittse (.17 

 in.) depressits, Fabr. 



Elongate-ovate, black above and beneath, legs and antennae red, , 

 elytra greenish-black, with or without many narrow, more or less 

 confluent vittae (. 18 in.) griseostriatus, DeGeer. 



