THE CANADIAN ENTOMOLOGIST. 45 



2. Elytra much more than twice as long as wide, the general form more 



slender, with a relatively somewhat smaller prothorax, the sides of 

 which are subparallel for more than half the length from the apex, 

 then strongly converging to the base, the surface uneven, with an 

 elevation at each side near the middle and a large elongate-oval 

 median elevation in basal two-thirds, which is concave anteriorly 

 and deeply foveate at base, the tubercles of the general surface 

 moderate, not parted along the median line at the centre of the 

 pronotum ; elytra each with two discal ridges and three strong 

 subapical tumidities, coarsely foveato-punctate in series. Length 



12. 0-13. 5 mm.; width 4.2-4.9 mm. Oregon porcata, Lee. 



Elytra together twice as long as wide 3 



3. Body nearly similar throughout to /<?rfrt/rt! but very much stouter, the 



elytral punctures more shallow and obscure, the pronotum with very 

 coarse tubercles anteriorly, the basal pubescent fovea of porcata 

 replaced by a short nude sulcus, the central part of the disk not 

 sulcate, but more coarsely tuberculose than m porcata; elytra nearly 

 similar, except that the outer of the three subapical tumors is very 

 much smaller and less prominent. Length 14.5 mm.; width 5.5 mm. 



Idaho (Coeur d'Alene) robusttda, n. sp. 



Body stouter than in porcata, the prothorax rounded and subprominent 

 at the sides anteriorly, more strongly narrowed posteriorly from the 

 middle or still more anteriorly ; elevations of the surface nearly as in 

 porcata, but with the oval central inclosure much more open 

 anteriorly and with very large tubercles ranged in series along a 

 narrow nude longitudinal sulcus at the centre of the pronotal disk ; 

 subapical tumors of the elytra large and conspicuous ; elytra nearly 

 similar but with much deeper, more perforate and distinct serial 

 foveae. Length 10. 8-14.0 mm..; width 3.9-5.1 mm. New Hamp- 

 shire (White Mts.) and Pennsylvania obcordata, Kirby 



4. Body generally similar to the preceding but with the prothorax 



rounded at the sides anteriorly and moderately narrowed in basal 

 two-fifths, the general surface flatter, with less prominent elevations, 

 the median basal oval elevation much shorter, not extending before 

 the middle, with a narrow sulciform fovea at the centre c^f the 

 pronotal disk, and a larger and more rounded pit at the base ; 

 tubercles throughout strong and distinct ; elytra with the inner of 

 the longitudinal ridges less obliterated behind basal fourth, almost 



