Coleopterological Notices, IV. 505 



to be very feebly impressed near the base. This is the smallest 

 species known to me, and is quite distinct, differing from the 

 form assumed to represent serea, in its smaller size, longer beak, 

 larger head, still stronger aeneous lustre, and more constricted pro- 

 thorax. The base of the pronotum is nearly three times as wide as 

 the head in aerea, and the grooves of the elytra are much coarser, 

 the interstitial punctures being more evident; in scintillans the 

 latter are as nearly as possible completely obsolete. 



43 Baris aeneomicans n. sp. — Oblong-oval, somewhat depressed, 

 highly polished, black throughout and with a strong seneous metallic lustre. 

 Head not distinctly punctate ; beak finely but deeply punctate, the punctures 

 sparse even at the sides, thick, strongly arcuate, very nearly as long as the 

 prothorax ; antennae somewhat slender, the club not very large. Prothorax 

 widest before the base, transverse, fully one-half wider than long, somewhat 

 inflated, the sides subparallel in basal three-fourths and strongly arcuate, 

 then moderately convergent and feebly sinuate for a short distance to the apex, 

 which is transversely truncate ; base a little less than three times as wide as 

 the head, straight and feebly oblique from the small and feeble median lobe 

 to the basal angles ; disk with a narrow and feebly defined but subentire 

 median line, the punctures coarse and rather sparse, deep and perforate, 

 about one-half as wide as the scutellum and separated by nearly their own 

 diameters. Scutellum moderate, subquadrate, not longitudinally impressed. 

 Elytra two-fifths longer than wide, quite distinctly more than twice as long as 

 the prothorax, and, at the rather large and tumid humeri, very slightly wider 

 than the disk of the latter ; sides feebly convergent from behind the humeri, 

 the apex almost evenly and semi-circularly rounded ; disk with rather narrow 

 but abrupt and very deep, finely, remotely punctate grooves, the intervals 

 flat, rather more than twice as wide as the grooves, each with a single even 

 series of small but distinct, widely distant punctures, which are not at all 

 confused on the second or third ; seta? very minute and almost completely 

 invisible. Abdomen not very finely but feebly and very sparsely punctured. 

 Legs rather coarsely and deeply but sparsely punctate ; tibia? straight ; tarsal 

 claws small. Length 3.5 mm. ; width 1.65 mm. 



Massachusetts. 



A decidedly distinct species, distinguishable by the bright eeneous 

 lustre, sparse punctuation, short, laterally arcuate prothorax and 

 somewhat depressed form. The prosternum is feebly impressed 

 and widely separates the coxae. The single specimen is apparently 

 a female. 



44 Baris Hyperion n. sp. — Feebly rhomboid-oval, convex, highly 

 polished and with a strong .bronzy-aeneous lustre; legs black; seta? very 

 minute, sparse and inconspicuous. Head extremely minutely, sparsely punc- 

 tate, the beak more strongly but not closely so, very robust, arcuate, flattened 



