SEP T'^'Wl 



HAYWAKD. 105 



nieral spot, a narrow line along the suture, and three more or less 

 interrupted, sinuous bands, which do not attain the margin. These 

 gradually become broader and more extended until the black pre- 

 dominates, the elytra being then spotted and banded with testaceous. 

 Finally, in the form known as posticum Hald., we have the pale 

 markings confined to the posterior third, the others being entirely 

 effaced. The depth of the elytral striae also varies, and with it the 

 convexity of the intervals, which are nearly flat in those specimens 

 in which the elytra are most finely striate. The third interval is 

 usually slightly wider than the others, but this is not a constant 

 character. The thorax varies slightly in width as compared with 

 its length, and in the depth of the sinuation of the sides at base. 



As above constituted it occurs from the Atlantic to the Pacific, 

 being known to me from Nova Scotia, Canada, the New England 

 States, New York, New Jersey, Pennsylvania, Maryland, Ohio, 

 Michigan and the Lake Superior region, Illinois, Missouri, Wiscon- 

 sin, Iowa, Manitoba, Nebraska, Colorado, Nevada, and along the 

 Pacific coast from California to Bi'itish Columbia. Specimens from 

 Nevada and the Pacific coast are usually labeled conspersmn. 



82. B. iiigripes Kirby.— Form rather broad, sliglitly convex ; color black, 

 more or less jeneous, the elytra variegated with testaceous markings, these usually 

 consisting of a basal spot, a transverse band in front of and another behind the mid- 

 dle, and often an apical spot, the transverse bands rarely attaining the suture and 

 often more or less interrupted. Head alutaceous, as wide as the thorax at apex ; 

 palpi piceous or nearly black ; antennas about one-half the length of the body, dark 

 piceous or black. Prothorax subquadrate, rather more than one-half wider than 

 long, as wide at base as apex, usually finely alutaceous; apex truncate; median 

 line distinct, subentire or slightly abbreviated at each end ; transverse impres- 

 sions moderately distinct; basal impressions bistriate; sides with the margin very 

 narrowly reflexed, slightly arcuate in front, rather feebly sinuate behind : hind 

 angles rectangular, strongly carinate. Elytra oblong-ovate, about one-half wider 

 than the thorax, moderately deeply striate: striae entire, distinctly punctate to 

 behind the middle, the seventh slightly grooved at tip; intervals feebly convex, 

 the third with the first dorsal puncture about one-third from base, the second 

 about one-third from apex. Beneath black, shining. Legs dark piceous or black. 

 Length .13-.16 inch ; 3.25-4 mm. 



Very closely allied to variecjatum, of which it may 2^r<^ve to be 

 only a variety. 



It is known to me from Anticosti and the Gulf of the St. Lawrence 

 (Henshaw), the Lake Superior region, Manitoba (Winni])eg), Al- 

 berta (Calgary), Montana, Colorado, Utah, Oregon, Washington, 

 British Columbia and Vancouver Island. 



TRANS. AM. P:NT. SOC. XXIV. (14) APRIL, 1897. 



