ROLAND HAY WARD. 65 



head is either nearly or quite a.s wide as the thorax at apex. The 

 depth of the sin nation of the sides of the thorax varies slightly, as 

 does also the width at base as compared with that at apex. The 

 elytra vary somewhat in the depth of tlie striation and in color from 

 brownish to black. Lastly, the legs exhibit every gradation of color 

 from rather pale rufo-piceous to nearly black. 



It occurs abundantly in the Rocky Mountain region, extending 

 westward to the Pacific coast and northward to Alaska. 



30. B. coiiiplaiiiiluni Maun.— Eather short, depressed ; color hlack, often 

 slightly tinged with blue, shining. Head as wide as the thorax at ajiex ; jialpi 

 black ; antennae about one-half the length of the body, black. Prothorax about 

 one-half wider than long, scarcely narrower at base than apex, finely rugose at 

 base; apex nearly truncate ; median line distinct, abbreviated before and behind ; 

 transverse impressions distinct; basal impressions broad, deep, bistriate; sides 

 with the margin narrowly reflexed, slightly arcuate in front, obsoletely sinuate 

 behind ; hind angle sub-obtuse, but not rounded, carinate. Elytra scarcely one- 

 half wider than the thorax, oblong-ovate, moderately deeply striate ; striae entire, 

 impuuctate, scarcely less deep at sides and apex, the fifth grooved at tip: third 

 stria with the first dorsal i)uncture about one-third from base, the second about 

 one-fourth from apex ; intervals nearly flat. Beneath black, shining. Legs 

 black, the tibiae and tarsi sometimes piceous. Length .12. 16 inch ; 3-4 mm. 



The smallest species of the group. It is most nearly related to 

 planiusculinn, but is quite easily I'ecognizable by the above charac- 

 ters. The thorax varies somewhat in width as compared with its 

 length. 



It occurs on the Pacific coast from Alaska to California,, extending 

 eastward to the Rocky Mountains, but appears to be local. 



31. B. funereum Lee. — Form rather elongate, slightly convex ; color 

 nearly black, feebly aeneous, the elytra more or less tinged with brown, shining. 

 Head scarcely narrower thfin the thorax at apex ; palpi piceous; antennae about 

 one-half the length of the body, piceous. Prothorax moderately convex, slightly 

 wider than long, slightly narrower at base than apex, rugose at base; apex feebly 

 emarginate; median line distinct, usually abbreviated in front; anterior trans- 

 verse impression feeble, the posterior deeper; basal impressions broad, deep, bi- 

 striate ; sides with the margin distinctly reflexed, arcuate in front, sinuate behind ; 

 hind angles rectangular, carinate. Elytra about one-half wider than the thorax, 

 nearly oval, finely striate: striae entire, impunctate, the outer ones less deeply 

 impressed, the fifth terminating in a groove; third stria with the first dorsal 

 puncture slightly in front of the middle, the second about one-fourth from apex ; 

 intervals nearly flat. Beneath nearly black, shining. Legs varying from rufo- 

 piceous to piceous. Length .17-. 21 inch: 4.25-5.25 mm. 



This species is most nearly allied to uigrocceruleum, qnadrifoveola- 

 tmn and maeklini. With the former it agrees in having the elytra 

 nearly oval. From all it diffei-s by its proportionally longer and 



TR.\NS. AM. ENT. SOC. XXIV. (9) M.A.KCH, 1897. 



