Coleopterological Notices, IV. 433 



8 O. floridanilS n. sp. — Slender, feebly cylindro-cuneate, polished, 

 black throughout, the upper surface bristling with long sparse erect setae, 

 white and piceous indiscriminately intermingled, the piceous setae longer and 

 much thinner than the white, the latter rather robust ; under surface very 

 remotely, feebly albido-pilose, the scutellum, sternal parapleurae and meso- 

 sternum between the narrowly separated coxae densely clothed with recum- 

 bent white tufted pubescence. Head sparsely, unevenly, distinctly punc- 

 tate, without frontal fovea, the eyes separated by scarcely more than two- 

 thirds of their own width ; beak moderately thick, very short, nearly straight, 

 scarcely two-thirds as long as the prothorax, narrowly polished and tumid 

 along the middle between two punctured erosions, coarsely, closely punctato- 

 rugose at the sides, sparsely hispido-setose ; antennae moderate. Prothorax 

 almost evenly truncato- fusiform, much longer than wide, the base and apex 

 about equal in width, the latter only very feebly arcuate ; sides evenly, 

 feebly arcuate, scarcely at all sinuate near the base ; disk rather finely, 

 sparsely, unevenly punctate, widest at the middle. Elytra distinctly more 

 than twice as long as the prothorax, and, behind the middle, twice as wide 

 as the disk of the latter, gradually slightly narrower thence to the base ; 

 humeri rather broadly exposed but obliquely truncate ; disk with very 

 feebly impressed series of rather coarse, deep, somewhat distant punctures, 

 the punctures of the interstitial series minute and very remote. Legs rather 

 short and thick, the femoral teeth large and prominent ; tibiae bent toward 

 base. Length 4.0 mm. ; width 1.3 mm, 



Florida. 



A slender species, somewhat resembling myrmex in form, but 

 abundantly distinct in the mixture of long white and blackish 

 setee of the upper surface, the longer elytra, and in the subcylin- 

 drical and not obovate prothorax. 



9 O. iaevicollis Horn.— Proc. Am. Phil. Soc, XIII, p. 451. 



Rather robust, feebly cuneate, strongly convex, polished, black 

 throughout, the tarsi piceous ; upper surface very sparsely covered 

 with moderately long erect setse, white in color but becoming 

 blackish on the disk of the pronotum anteriorly, and shorter and 

 denser near the base, very remote in single series on the elytra, 

 where they are confined for the most part to the alternate intervals ; 

 under surface and legs covered with sparse semi-erect white setse, 

 the scutellum and sternal parapleurae densely pubescent. Head 

 almost completely impunctate, narrow, slightly depressed, opaque, 

 sparsely punctate and sparsely setose between the eyes, the latter 

 large, prominent and separated by less than one-third of their own 

 width ; beak moderate, coarsely punctate and rugose at the sides, 

 with a feebly impressed longitudinal line in the middle between the 



