208 MEMOIRS ON THE COLEOPTERA 



except that the antennae are shorter and more slender. Length 

 (d" 9) 12.5-12.8 mm.; width 3.6-4.0 mm. California (Mt. Diablo 

 and Los Angeles Co.) lateralis Csy. 



Elytra black, with a discal and marginal pale vitta 5 



Elytra black or piceous, with simply a discal pale vitta, the margins 

 black, varying to almost wholly pale 6 



5 Body moderately stout, feebly convex, slightly shining, black, the 

 elytral vittse flavo-, the abdomen of the female rufo-testaceous, 

 with the two basal segments black; head finely but strongly, very 

 densely punctate, the eyes small, the sides behind them gradually 

 converging and nearly straight to the neck; antennae with the third 

 joint much longer than any other; prothorax slightly elongate, 

 feebly narrowed from base to apex, strongly biconstricted, feebly 

 impressed dorsally between the constrictions, finely, very closely 

 and strongly punctate and clothed with pale yellowish-cinereous, 

 somewhat bristling pubescence; elytra strongly tapering from base 

 to apex, one-half wider than the prothorax and between three and 

 four times as long, strongly but not very coarsely punctate, the 

 punctures in great part transversely confluent, the pubescence 

 short, slightly oblique, not dense and inconspicuous, the flavate 

 vittae not quite attaining the tips, which are obliquely and recti- 

 linearly truncate, with small acute and dentiform sutural angle. 

 Length (c? 9 ) 14.0-21.0 mm.; width 3.3-6.0 mm. New England 

 to Ohio trivittatus Say 



Body black, similar to the preceding, except that it is smaller in size and 

 with shorter legs and tarsi, the sutural black vitta not broadening 

 basally and widely enclosing the scutellum, as it does in trivittatus, 

 but narrow, not broader toward the scutellum, which it sometimes 

 barely attains; pale vitta much broader. Length (a 71 9 ) I3-5- 

 16.0 mm. ; width 3.4-4.4 mm. Ontario and Minnesota. 



vittiger Rand. 



Body black, flavo-pubescent, the prothorax strongly constricted an- 

 teriorly and posteriorly, shining, sparsely punctulate, canaliculate, 

 armed at the sides with a large acute tubercle; elytra narrowed from 

 the base, twice as wide as the prothorax, densely punctulate and 

 rugose, the margin from base almost to the apex and a dorsal vitta 

 on each, evanescent posteriorly, abbreviated anteriorly and bounded 

 on each side by a distinct elevated line, pale, the apices obliquely 

 subtruncate. Length 25.0 mm. Fort Vancouver and vicinity. 



flavolineatus Lee. 



Body slender, black, finely, densely sericeo-pubescent; lateral tubercles 

 of the prothorax large, obtusely rounded, the constrictions strongly 

 marked; elytra with the pubescence transverse, " testaceous, suture, 

 discoidal stripe and side margin blackish " [in diagnosis (Tr. Am. 

 Ent. Soc., 1874, p. 67)], " the discoidal vitta confined to the upper 

 plane of the elytra and the lateral space between it and the margin 

 ferruginous " [in subsequent remarks (1. c.)], the tips obliquely 

 subtruncate; abdomen of the male ferruginous, of the female 

 blackish, with silvery pubescence; antennae (c?) stout and as long 



