Coleopterological Notices. 355 



here described, but should be associated with conicicollis because 

 of its strongly bisinuate base of the prothorax. - 



E. COllicicollis n. sp. — Elongate-oval, strongly convex, polished, black, 

 the under surface, legs and antenna? dark rufo-piceous. Head moderate, rather 

 finely, deeply and densely punctate, the punctures much more crowded ante- 

 riorly ; eyes moderate, scarcely perceptibly more prominent than the sides 

 before them ; epistoma broadly subtruncate ; antenna? long and slender. Pro- 

 thorax about three-fourths wider than long, trapezoidal in form, the apex but 

 slightly more than two-thirds as wide as the base, very feebly emarginate in 

 circular arc, the apical angles right, not in the least rounded ; base transverse, 

 broadly and very distinctly bisinuate, the basal angles right and very narrowly 

 rounded, not at all prominent posteriorly ; sides evenly convergent from near 

 the base to the apex and almost straight, feebly arcuate near the base ; disk 

 widest a very little before the base, finely, very sparsely but distinctly punc- 

 tate, the punctures becoming much coarser, very dense and semi-coalescent 

 near the sides, the marginal bead very fine, not very strongly elevated or 

 acute, becoming a very little more prominent near the base. Elytra parallel, 

 equal in width throughout to the prothorax and barely three times as long, 

 rather abruptly broadly angulato-parabolic at apex ; disk with unimpressed 

 series of small, rather feeble but very approximate punctures which become 

 rather confused near the apex, the intervals fiat, very minutely, sparsely and 

 irregularly punctured. Abdomen extremely minutely and very sparsely punc- 

 tate, the punctures becoming coarse but not very dense near the sides. Legs 

 slender, the femora not robust ; posterior tarsi not quite as long as the tibiae. 

 Length 6.2-7.0 mm. ; width 2.7-3.1 mm. 



Arizona. 



The metasternum is, if anything, a little longer than the first 

 ventral segment, coarsely, rather densely punctate in the anterior 

 half, extremely minutely and sparsely so thence posteriorly to the 

 transverse groove, which is well developed although obsolete as 

 usual in the middle and not attaining the episterna. 



This species is not closely allied to any other ; subopacus which 

 has a somewhat similarly shaped prothorax, has more inflated elytra, 

 a straight transverse pronotal base and very dull lustre. 



E. convexus Lee. — New Spec. Col., 1866, p. 107. — Elongate-oval, very 

 strongly convex, polished throughout, piceous-black, often paler from imma- 

 turity ; legs and antenna? dark piceo-testaceous. Head much wider than long, 

 moderately convex, rather finely, very densely punctate, more densely so 

 anteriorly ; eyes moderate, barely more prominent than the broadly rounded 

 sides before them ; epistoma subtruncate or very feebly sinuate ; antenna? long 

 and very slender, the club elongate, loose and feeble, eighth joint much longer 

 than wide. Prothorax from three-fifths to three-fourths wider than long, the 

 apex about three fourths as wide as the base, feebly, evenly emarginate in 

 Annals N. Y. Acad. Sci., V, Nov. 1890.— 24 



