474 Coleopterological Notices, IV. 



Pronotal punctures decidedly coarse, deep and sparser, the impunctate line 

 almost obsolete ; punctures of the intervals coarse but extremely feeble 

 and rather remote ; body piceous in color, the elytra pale rufo-castaneous. 



28 sparsa 

 Pronotal punctures very fine, without trace of median impunctate line ; large 



species 29 Ibriiimeipes 



23 — Sides of the prothorax strongly convergent from the base and with a 

 broad sinuation in more than basal half; beak unusually long and 



strongly arcuate 30 deformis 



Sides of the prothorax subparallel or very feebly convergent, without distinct 



sinuation. 



Pronotum usually densely punctate, the punctures deep and often almost in 



mutual contact throughout, without trace of impunctate line except in 



futilis, where it is very variable and sometimes conspicuous. 



Legs intense black throughout and rather strongly and closely punctured ; 



body somewhat robust 31 futilis 



Legs piceous-black, the knees feebly rufescent ; body decidedly slender, 

 the beak rather slender, strongly arcuate and about four-fifths as long 



as the prothorax in the female 32 inconspicua 



Pronotum less densely punctate and with a narrow, moderately definite im- 

 punctate line, which, however, occasionally becomes obliterated ; sides 

 of the prothorax almost evenly rounded from base to apex. 

 Integuments with strong aeneous metallic lus'tre. 



Smaller species, about 3 mm. in length 33 confinis 



Larger species, 4 mm. in length, more robust ; beak a little shorter and 



stouter 34 siibsimilis 



Integuments intense black, without trace of aeneous lustre ; prothorax 

 more elongate, the pronotal punctures usually sparser.. ..35 socialis 



24 — Pronotum generally densely punctate 25 



Pronotum more sparsely punctate 26 



25 — Elytral striae coarse, at least nearly one-half as wide as the intervals. 

 Body narrowly oval ; sides of the prothorax convergent from the base and 



strongly, almost evenly arcuate 36 aperta 



Body broad, oblong, the prothorax much more transverse ; sides abruptly 

 rounded and convergent anteriorly ; lustre strongly aeneous. 



37 alJiupta 

 Elytral striae very fine, much less than one-half as wide as the intervals. 

 Striae finely but remotely crenulate, the intervals often feebly alutaceous in 

 lustre ; large species, the body moderately stout, parallel. 



38 tenuestriata 

 Striae totally impunctate and without trace of crenulation ; body small and 



slender 39 111 a era 



26 — Form narrow, the prothorax but slightly wider than long. 



40 discipula 

 Form more broadly ovate, the prothorax more or less strongly transverse. 

 Lustre strongly aeneous. 

 Beak very short, scarcely two-thirds as long as the prothorax. ..41 aerea 



