f- 

 CERAMBYCID^ 26 1 







made a plausible pretext for suggested synonymy by one so inclined; 

 but in reality crassicornis is a decidedly different species from cras- 

 sipes, not only because of its much larger size but in its style of 

 elytral maculation, as well as other features. Besides crassipes 

 and crassicornis of LeConte, Xestoleptura will include a number of 

 species and subspecies related to crassipes, as denned below, as well 

 as behrensi Lee., octonotata Say and the two following very distinct 

 species : 



Xestoleptura corusca n. sp. Moderately stout and convex, black and 

 very strongly shining, the abdomen bright red throughout, the legs and 

 antennae wholly pale ferruginous; elytra with three moderately broad, 

 successively decreasing yellow fasciae, interrupted at the suture, basal, 

 at basal third and just behind the middle, each also sometimes with a 

 small pale spot near the apex near inner third ; pubescence pale, not dense, 

 erect and bristling anteriorly, short, sparse and inclined on the elytra; 

 head rather convex, strongly and densely punctate, the tempora nearly 

 as prominent as the eyes, gradually arcuato-converging to the nuchal 

 constriction, which is impunctate; antennse (o 71 ) heavy and long, ex- 

 tending to apical fourth of the elytra, subcompressed, serrulate except 

 basally, very pale and uniform testaceo-ferruginous in color; prothorax 

 barely wider than the head, rather longer than wide, constricted and 

 moderately narrowed at apex, subparallel basally, the basal angles not 

 prominent; punctures coarse laterally, finer medially, everywhere well 

 separated; elytra four-fifths wider than the prothorax, rather more than 

 twice as long as wide, strongly cuneiform, with nearly straight sides, the 

 rounding apices narrowly truncate at the suture; surface very sparsely 

 punctate, finely basally, still more minutely apically; legs stout; tarsi 

 stout, the posterior longer than the tibiae, coarsely and pallidly hairy 

 throughout. Length (c?) 12.7 mm.; width 4.0-4.2 mm. California 

 (Grant Forest), Hopping. 



Not closely allied to any other species and readily determinable 

 from the characters given in the description; it is one of the most 

 shining Lepturids known from our faunal regions. 



Xestoleptura columbica n. sp. Narrower, more parallel (9), convex, 

 deep black throughout excepting the elytra, the tibiae pale, dark at tip; 

 tarsi missing in the type; pubescence short and coarse, close and erect 

 but not conspicuous anteriorly; head moderately strongly, closely 

 punctate, with a medial stria; tempora scarcely at all less prominent 

 than the eyes, rounding behind them to the nuchal constriction, which 

 is not impunctate; antennae slender, deep black, moderate in length; 

 prothorax equal in width to the head, scarcely as long a.? wide, rather 

 finely but strongly, very densely punctate throughout, the sides parallel 

 and barely sinuate to beyond the middle, then feebly oblique to the 

 unusually broad apex, the constriction only moderate, much less developed 

 than in the preceding or in the crassipes type; elytra distinctly cuneiform, 



