94 AMERICAN COLEOPTERA. 



Thorax subquadrate, sides moderately strongly arcuate in front, deeply sinu- 

 ate behind. 

 Broad, dilated ; elytra more than one-half wider than the thorax, deeply 

 striate, the strije dilated at base, with a transverse depression behind 

 the scutellum ; head and thorax cupreo-feneous, elytra testaceous, 

 with a small spot on the third interval about one-third from base, a 

 transverse fascia about the middle and another between this and the 

 apex nearly black ; legs testaceous. Length .20-. 24 inch. 



postfasciatuui Hamilton. 



17. Elytra scarcely wider than the thorax 18. 



Elytra very distinctly wider than the thorax. 



Form and color nearly as in posffasciatum, the elytra without postscutellar 

 depression, more finely striate, the stripe not dilated at base, the mark- 

 ings narrower and paler ; head and thorax bright viridi- or cupreo- 

 seneous; legs testaceous. Length .20-.23 inch (lorsale Say. 



Slightly depressed ; nearly black, slightly seueous. elytra slightly tinged 

 with brownish, with a humeral lunule and a transverse band behind 

 the middle pale yellow ; legs testaceous. Length .14-. 15 inch. 



wickhaini n. sp. 



Slightly convex ; brownish piceous or nearly black, immaculate ; legs dark 

 rufous. Length .12 inch rubiginosiim Lee. 



18. Moderately robust; aeneous or nigro-seneous, the elytra immaculate; sides 



of thorax arcuate to base, hind angles obtuse with a short, fine carina ; 



legs black. Length .17-.20 inch obtusanguluiii Leo. 



Elongate, convex ; head and thorax black, scarcely aeneous, the elytra testa- 

 ceous variegated with black, sul)parallel ; sides of thorax feebly ar- 

 cuate in front, slightly sinuate behind, hind angles rectangular, finely 

 carinate ; legs rufous. Length .13-. 18 inch epitippiger Leo. 



64. B. tigi'inuin Lee. — Form rather broad, feebly convex ; color testaceous, 

 occiput, apex at middle and base of thorax, and cloud-like spots on the elytra 

 dusky. Head as wide as the thorax at apex ; palpi testaceous; antennae less than 

 one-half as long as the body, testaceous. Prothorax scarcely one-half wider than 

 long, subquadrate, narrower at base than apex, rugose at base ; apex nearly trun- 

 cate ; median line fine, abbreviated before and behind ; anterior transverse im- 

 pression rather feeble and moderately close to the apex, the posterior deeper ; 

 basal impressions broad, rather shallow and feebly bistriate ; sides with the mar- 

 gin very narrowly reflexed, arcuate in front, more or less sinuate behind ; hind 

 angles subobtuse, not carinate. Elytra slightly wider than the thorax, oblong- 

 ovate, moderately deeply striate, much more finely at sides and apex ; striae en- 

 tire, impunctate, the fifth slightly grooved at tip, the eighth close to the margin, 

 but more distinct than in the others of this group; intervals moderately convex, 

 especially the inner ones, the third with the first dorsal puncture about the mid- 

 dle, the second about one-sixth from apex ; the dusky markings are more or less 

 connected along tlie suture as far as the fourth stria, and consist of a basal cloud 

 more marked on the humeri, a transverse band about the middle and a shorter 

 one about oiie-fourth from apex ; the margin and apex are pale. Head and thorax 

 beneath testaceous, abdomen dusky. Legs testaceous. Length .20-. 24 inch ; 

 .5 6 mm. 



Distinct from all the other .species of the geuus by its peculiar 



