NORTH AMERICAN COLEOPTERA. O 



it is nearly two-thirds wider than long. The sides of the protliorax 

 are more convex anteriorly than posteriorly, where they are nearly 

 parallel and straight. 



A. pallida n. sp. — Form broadly oval, sides parallel. Head small, 

 sub-triangular ; eyes small, convex, and salient ; surface convex and highly 

 polished ; labrnm prominent, feebly and narrowly sinuate anteriorly, surface 

 minutely reticulated ; antennae very slender, coarsely setose, as long as the 

 base of the pronotum ; mentum tooth narrower than long, feebly bifid at the 

 tip, prominent ; mandibles very finely acuminate at tip, toward which they 

 are blackish in color. Protliorax at apex as wide as the head, scarcely one- 

 third wider than long, more than one-third wider at base than at apex ; sides 

 feebly arcuate, slightly more so anteriorly than posteriorly ; disk very con- 

 vex, median line very fine and distinct, the two basal impressions at each 

 side are rather feeble, irregularly and coarsely puctured, punctures deeply 

 impressed and isolated ; surface highly polished. Scutellum transverse, 

 triangular, sides straight. Elytra at base as wide as the pronotum ; sides 

 parallel and very feebly arcuate ; disk very convex, one-half longer than 

 wide, and one-third longer than the head and protliorax together ; striae 

 deep, punctate, interspaces very convex and highly polished ; elytra together 

 broadly rounded behind ; there is a row of setae near the humeral angles 

 and a continuation of the same, beginning at a distance fi'om those angles 

 equal to two-thirds the entire elytral length. Legs moderate, fourth joint 

 of anterior tarsi very small, not more than one-half as long as the third. 

 Extremity of last ventral segment bearing one seta on each side near the 

 immediate vertex. The color of the entire insect is a pale piceo-testaceous, 

 becoming rather rufo-testaceous toward the front ; femora still paler. Length 

 5.3 mm., breadth 2.5 mm. % . 



Willets Point, New York Harbor ; one specimen. 



The type of" this species has the liead strongly deflexed. Tiie very 

 pale color may be due to immaturity; the eyes and portions of the 

 mandibles are, however, deeply colored. The species is of a much 

 broader and more convex form than any other which can be con- 

 sidered nearly related to it, and the elytra are proportionally much 

 shorter. 



A. feri'Ugiliea n. sp. — Form moderately robust, sides nearly parallel. 

 Color of entire body rather dark reddish-ferruginous. Head small, slightly 

 wider across the eyes than long ; eyes small. Protliorax at base twice as 

 wide as the head, and one-third wider than long ; base much longer than 

 the apex, both nearly transverse and straight ; sides almost evenly convex, 

 border narrow, beginning slightly behind the anterior angles and continuing 

 with the same width along the base for a short distance, where it becomes 

 interrupted and lost ; median line distinct and attaining the base ; disk 

 moderately convex, highly polished, without any traces of punctuation at 

 the base, near the basal angles there is a small, round, deeply impressed, 

 punctiform pit. Scutellum strongly transverse, short, triangular, sides 



