Coleopterological Notices, III. 159 



sex. There is before me a male which should apparently be asso- 

 ciated with the female type above described, being depressed and 

 nearly similar in size and outline. The pronotum of this specimen 

 is strongly alutaceous and dull, and has two extremely large and 

 deep discal fovea?, probably of an accidental nature ; the antennae 

 are but slightly more than one-half as long as the body, but stout, 

 compressed, with the joints much more strongly obconical, the third 

 joint scarcely one-half as long as the fourth. 



A. nigrescens n. sp. — Oblong-oval, rather strongly convex, piceous- 

 black throughout, the antennae black ; tarsi rufescent ; integuments shining ; 

 pubescence sparse. 



Male. — Head rather finely but deeply, very densely punctate ; eyes promi- 

 nent, separated by their own width ; antennae long, stout, strongly compressed, 

 fully two-thirds as long as the body and subequal in length to the elytra, 

 joints strongly obconical, scarcely more than twice as long as wide, the third a 

 little longer than wide and less than one-half as long as the fourth. Prothorax 

 rather long and subquadrate, one-third wider than long ; sides parallel and 

 straight in basal two-thirds, then evenly, strongly rounded to the truncate 

 apex ; base transverse, the sinuations narrow and feeble ; basal angles right, 

 blunt ; disk rather convex, finely punctate, the punctures sparse but denser 

 toward the middle anteriorly, with a feeble impunctate line toward base ; 

 basal fovea? small and distinct. Elytra unusually short, twice as long as wide, 

 one-half wider and not quite four times longer than the prothorax, narrowly, 

 gradually dehiscent from the middle, the sides in basal two-thirds parallel 

 and feebly arcuate ; humeri broadly exposed at base ; disk with rows of rather 

 small punctures, deep and conspicuous except toward the sides, where they 

 become very fine, the striae more or less strongly impressed throughout the 

 width ; intervals finely, confusedly and not very sparsely punctate. Abdomen 

 wanting in the type. Legs rather short, the anterior tarsi dilated, the poste- 

 rior scarcely three-fourtbs as long as the tibiae, with the basal joint much 

 shorter than the remainder. Length 8.0 mm. ; width 3.0 mm. 



Florida. Mr. Jiilich. 



The principal differences between this species and the male of 

 brunneus reside in the broader, relatively longer and more com- 

 pressed antennae, which are black in nigrescens and pale brown in 

 brunneus, in the broader, relatively shorter elytra and much shorter 

 tarsi. In the male of brunneus the hind tarsi are very nearly as 

 long as the tibiae. From the male of concolor it differs in its convex 

 form and much longer antennae. With the female type of murrayi 

 it has very little in common. 



A, convergens n. sp. — Rather slender, moderately convex, piceous ; legs 

 and elytra dark brown ; integuments polished throughout ; pubescence sparse. 



