Coleopterological Notices, IV. 435 



punctures of the elytral series. The sparse seta3 of the pronotum 

 seem to be inclined to serial arrangement in basal half. 



11 O. inyrinecodes Chev. — Ann. Ent. Soc. Fr., 1832, p. 445; cJwvrolati 

 Horn : Proc. Am. Phil. Soc, XIII, p. 450. 



Cuneate, strongly convex, polished, black throughout, almost 

 glabrous above, the head and basal parts of the beak with short 

 sparse erect white setae, also a few of the latter longer and widely 

 spaced along the intervals of the elytra becoming white toward 

 apex ; prothorax feebly piceo-setose ; under surface and legs very 

 sparsely clothed with short white hairs, the scutellum and sternal 

 parapleurse as usual densely albido-pubescent. Head finely, re- 

 motely punctate, with a large deep elongate fovea between the eyes, 

 the latter separated by a little less than their own width ; beak 

 short, polished, strongly punctured on the sides ; antennae black. 

 Prothorax almost one-third longer than wide, strongly convex longi- 

 tudinally in apical two-thirds, gradually feebly inflated anteriorly, 

 strongly, rather unevenly punctate, especially in apical half and near 

 the base. Elytra less than twice as long as wide, convex longitu- 

 dinally, strongly inflated behind, where they are more than twice as 

 wide as the disk of the prothorax ; striffi unimpressed except near 

 the sides and composed of fine but deep, rather close-set punctures. 

 Legs long, the femora slender, rather minutely toothed ; tibiae almost 

 straight. Length 3.7-5.0 mm.; width 1.4-2.0 mm. 



Rhode Island, District of Columbia, North Carolina and Indiana; 

 numerous specimens. This is a distinct species, easily known by 

 its strongly, posteriorly inflated elytra, feebly developed dorsal setae, 

 slender, straight, finely toothed femora and deep frontal fovea. I 

 do not know the law or pi'ecedent under which the name given by 

 Chevrolat was changed by Dr. Horn ; If myrmecodes Say is a 

 synonym of myrmex Hbst., as seems to be undoubtedly the case, 

 Chevrolat's name cannot be preoccupied. 



12 O. rilficorilis n. sp. — Rather stout, convex, very feebly subcuneate, 

 black throughout and highly polished ; antennae and tarsi brownish-rufous ; 

 upper surface with numerous but very sparse, long, erect, blackish seta3, be- 

 coming whiter near the elytral apex laterally and also on the under surface, 

 where they are much shorter and subrecumbent ; scutellum and sternal para- 

 pleurae densely albido-pubescent. Head and beak rather sparsely but evi- 

 deJitly and unevenly punctate ; eyes separated by slightly less than their own 

 width, the interocular surface broadly, feebly impressed between two feeble 

 and distant carinae ; beak short, rather thick, nearly straight, not dilated 



