358 THE CANADIAN ENTOMOLOGIST 



The elytra are one-half longer than the pronotum; a little 

 narrower at the base than the pronotum, very slightly wider 

 behind; the sides nearly parallel for about four-fifths the length, 

 then rounded to the declivity, which is steep and truncate as 

 viewed from above, with the tips dehiscent and slightly tuberculate; 

 the elytral stria? regular, distinctly, but slightly, impressed on the 

 disc, except the sutural stria^, which are much wider and deeper 

 than the others and widened behind; the lateral stria' not im- 

 pressed; the strial punctures rather small and closely placed, more 

 closely on the first two and the lateral stria?; the first interspace 

 convex, finely granulate near the declivity; the second convex, 

 faintly granulate near the declivity; the remaining discal inter- 

 spaces fiat; all the discal striic uniseriately punctured throughout 

 their length, closely towards the declivity, very sparsely towards 

 the base; the lateral interspaces more closely punctured, uni- 

 seriately above, confused near the lateral margin, with the punc- 

 tures nearly as coarse as those of the stride ; the (iec/m/jv very abrupt, 

 deeply concave, not closely punctured, more coarsely than the 

 disc; the suture elevated, and smooth on the lower two-thirds; 

 the margin strongly elevated and armed with four teeth on each 

 side; the tooth of the second interspace well developed, acute, 

 recurved, preceded by a few minute granules; that of the third 

 obsolete, or represented by the largest of a row of small granules; 

 those of the fourth and fifth interspaces united at the base, the 

 connecting ridge nearly vertical ; the tooth of the fourth interspace 

 acute, recurved; that of the fifth stout, capitate, acute-pointed; 

 the fourth tooth conical, in the type occupying nearly all the 

 short space between the raised apical margin and the third tooth ; the 

 raised apical margin wide, moderately produced and entire; the 

 pubescence of the elytra long, erect, fine, rather dense on sides 

 below and about the declivity; the discal pubescence fine and 

 sparse. 



The: female type differs from the above only by the less strongly 

 developed epistomal armature, and the different declivital teeth. 

 The teeth are all acute and less strongly developed than in the 

 male; the second and third teeth are similar in shape, conical, 

 united at the base and but little larger than the first and 

 fourth. 



