188 NORTH AMERICAN 



sub-recumbent, plumbeous, rather dense but not at all conspicuous, uniform 

 in color tlirougliout, mucli more sparse beneath ; integuments sliining. Head 

 moderate mueli wider than long ; base broadly and roundly eraarginate 

 throughout ; basal angles slightly prominent, narrowly rounded ; eyes very 

 large, coarsely granulated, glabrous, at less than one-third their length from 

 the tips of tlie basal angles, inner edges feebly sigmoid, strongly convergent 

 anteriorly ; interocular surface finely strongly and evenly punctate, punc- 

 tures roun<l, perforate, distant by about twice their own widths, interspaces 

 feebly sub-granulose, flat ; antennae rather distant at base, robust, one- 

 third longer than the width of liead ; excavations deep, narrowly margined, 

 entering the eye as a rather feeble emargination ; first joint moderately 

 robust, slightly elongate, oval, second very slightly narrower, sub-globular, 

 thiid slightly narrower, much elongated, about as long as the next two 

 together, four to six slightly wider, quadrate, seven to eleven abruptly wider, 

 increasing slightly in widtli, forming a five-jointed club, seventh very slightly 

 wider than long, tenth one-half wider than long, eleventh conoidal, mode- 

 rately elongate ; last joint of the maxillary palpi nearly twice as wide as long, 

 transversely truncate and spongy at the apex, triangular, convex outwardly, 

 slightly concave internally, remaining joints very narrow. Prothorax widest 

 near the middle where it is one-third wider than long; sides strongly con- 

 vergent and nearly straight antei'iorly, less strongly convergent and feebly 

 arcuate to the base which is nearly transverse ; basal angles obtuse, not at 

 all rounded, somewhat prominent ; apex broadly arcuate, about two-thirds 

 as long as the base ; disk broadly convex, finely very densely and strongly 

 punctate ; punctures perforate, round, generally separated by their own 

 widtiis or less ; aiear the base there is on each side of the middle a large 

 deeply impressed lunate area, the two being completely divided. Scutellum 

 small, nearly circular. Elytra three-fourths wider than the pronotuui ; 

 sides parallel and nearly straight ; humeral angles rounded; together rather 

 abruptly and obtusely rounded behind, leaving the tip of the pygidium 

 exposed ; disk broadly convex, distinctly more than twice as long as wide, 

 rather finely very deeply and nearly evenly punctate ; punctures perforate, 

 round -near the base, finer and more elongate near the apices, generally 

 separated by twice their own widths, interspaces flat, extremely minutely 

 punctulate ; each elytron is narrowly margined along the suture, and is 

 broadly impressed in the middle near the base and slightly swollen between 

 the impression and tlie scutellum. Legs slender; posterior femora strongly 

 toothed on the internal edge at two-thiids the length from the base, the 

 opposite outer edge is also slightly swollen. Abdomen finely punctate and 

 minutely reticulate. Length 2.0 nnii. 



Gleiiolden, neai" Pliiladelphia, 1. 



I can distinguish but tour ventral segments besides tlio very short 

 pygidium, the lirst two being perhaps connate and together as long as 

 tlie remaining tliree. The only species whicii can be conibunded 

 with this is iinpressus, after which it should stand in the catalogue; 

 it ditl't-rs from tliat species, according to Dr. LeConte's description, 

 in size color and t'orni. 



