238 MEMOIRS ON THE COLEOPTERA 



tempora feebly oblique and arcuate behind them and barely less 

 prominent; antennae (9 ) slender, dusky-testaceous, three-fourths as 

 long as the body; prothorax much larger than the head, barely at all 

 longer than wide, much narrowed and strongly, obtusely constricted 

 at apex, the sides notably and subangularly prominent just before 

 the middle; surface strongly, densely punctate, less closely medially, 

 distinctly swollen at each side of the middle, especially before the 

 basal constriction; elytra large, two and one-half times as long as 

 the head and prothorax, four-fifths wider than the latter, feebly 

 cuneiform, the apices subtruncate but without external angulation, 

 the punctures deeply impressed, widely separated, very coarse 

 basally, becoming remarkably fine apically. Male much smaller 

 and 'more slender than the female, the thoracic and abdominal punc- 

 tures smaller and not so dense. Length (9cf) 10.3-11.7 mm. 

 width 2.75-3.8. mm. Colorado Levette and New Mexico (Sandia 

 Mts.), Wirt Robinson punctiventris n. sp. 



Abdomen shining, finely, feebly and not densely punctulate, not densely 

 pubescent 21 



21 Head quadrate, the straight parallel tempora scarcely at all less 

 prominent than the eyes, rounding rather abruptly at base to the 

 neck, very densely punctate. Body more slender, black, the anterior 

 versicolored legs as usual, the elytra dusky, with a pale discal vitta 

 on each, becoming obsolete posteriorly, and another, narrower, 

 feebler and more apical and external; vestiture throughout very 

 short, sparse and inconspicuous; head fully as wide as the prothorax, 

 slightly transverse, the antennae (cf ) slender, four-fifths as long as 

 the body, testaceous, with the basal joint dusky; prothorax slightly 

 elongate, the rounded apex moderately narrowed and broadly con- 

 stricted, the sides rather prominent but obtuse medially; surface 

 nearly as in the preceding, shining but with the strong punctures 

 close throughout, excepting the smooth narrow median line; elytra 

 cuneiform, three-fifths wider than the prothorax, not quite twice as 

 long as the head and prothorax, the punctures nearly similar but 

 less coarse and more perforate; abdomen deep black throughout, 

 the fifth segment (cf ) with a small apical concavity. Length (cf ) 

 10.5 mm.; width 3.0 mm. Colorado. [Leptura longicornis Kirby]. 



longicornis Kirby 



Head much smaller, the tempora obliquely and broadly arcuate from the 

 eyes to the neck, the eyes relatively more prominent though moderate 

 in size 22 



22 Body slender (cf ), or rather stout, with parallel elytra (9 ), colored 

 and clothed as in longicornis, the pale vittae of the elytra variable in 

 extent and similarly nubilous; head nearly similar in the sexes, 

 though relatively smaller in the female, densely punctate; antennae 

 very slender, almost as long as the body (cf ), distinctly shorter ( 9 ) ; 

 prothorax nearly as in the preceding but smaller and barely as long 

 as wide, the swelling of the surface at each side of the middle ob- 

 solescent, the punctures throughout rather well separated, denser in 

 the female; elytra cuneiform (cf) or parallel (9), the punctures 

 nearly as in punctiventris but relatively less minute apically; fifth 



