138 Journal New York Entomological Society. [Voi. v. 



Thorax slightly narrower at base than apex, sides moderately arcuate in front, 

 sinuate behind, hind angles rectangular; elytra moderately finely striato-punc- 

 tale, intervals nearly flat ; form less convex and color more brownish than in 



tistulatum. Length, .18-26 inch ; 4.5-6.5 mm lucidum. 



-23. Thorax wider than long 24 



Thorax as long as wide ; nigro-seneous, elytra often brownish at base with a sub- 

 marginal pale spot about one- fourth from apex, which is rarely wanting, 

 moderately finely striato-punctate, the first and second strice entire, the fifth 

 represented by a groove at apex ; legs rufo- testaceous. Length, .16-.20 inch ; 

 .4-.5 mm scopulinum. 



24. Head as wide as the thorax at apex 25 



Head small, narrower than the prothorax at apex ; elytra with a submarginal 



]Mle spots near the apex, which is rarely wanting. 



Elongate, convex; elytra finely striato-punctate, the stri;v not dilated, inter- 

 vals feebly convex; antennae piceous, the first joint rufous ; legs rufous, the 

 femora usually darker. Length, .24-. 30 inch ; 6-7.5mm.bimacuIatuin. 



More convex; thorax more narrowed behind; elytra deeply striato-punctate, 

 the stria; dilated on the disc, much finer at sides and tip; antenn£e fus- 

 cous, the basal joints paler; legs pale yellowish tsetaceous. Length, .24- 

 .28 inch; 6-7 mm pOStremuiTl. 



25. Elytra with the first and second stri;^; entire, the fifth either entire or represented 



by a groove at tip, the others abbreviated behind 26 



Elytra with all the stride entire; dark viridi-n:neous, the elytra without sub- 

 marginal pale spot, moderately deeply striato-punctate, more finely at sides 

 and tip; legs rufous. Length, .22-. 24 rnch ; 5.5-6 mm canadense. 



26. Hind angles of thorax rectangular 27 



Hind angles of thorax obtuse, but not rounded ; rather slender, elongate, color 



varying from brownish to black, slightly aeneous; elytra without submarginal 

 pale spot, rather deeply striato-punctate ; thorax with the sides feebly sinuate 

 in front of the hind angles; legs rufous. Length, .23-.28 inch; 5.75-7 mm. 



texanum. 

 27.' Moderately robust; black, usually slightly :cneous or bluish, the elytra rarely 

 with a submarginal pale spot, rather deeply striato-punctate; sides of thorax 

 distinctly sinuate behind ; legs rufous. Length .20-.24 inch ; 5-6 mm. 



picipes. 



Elongate, slightly convex ; black, slightly ^neous, elytra without submarginal 



pale spot, finely striate, striae distinctly punctate ; legs black or dark piceous. 



Length, .16-.18 inch; 4-4.5 mm grapii. 



28. Elytra with two dorsal punctures on the third interval 29 



Elytra with rows of sparsely placed, setigerous punctures on all the intervals; all 



the stricu abbreviated behind ; frontal strio^ normal 48 



29. Frontal striae normal ; elytra distinctly striate, with at least the first and second 



stria; entire ; strire punctate 30 



Frontal strire double, oblique, the outer interrupted 42 



Frontal striae double, nearly parallel, the outer entire 45 



Frontal striae very oblique, strongly convergent, double, the outer often very 



feeble, abbreviated behind 46 



i 



vt 



