I., .ronte.j CEUTORHYNCHLNX 279 



beak curved, punctured towards the tip, striate towards the base. Pro- 

 thorax wider than long, rounded on the sides, narrowed and constricted in 

 front, apical margin elevated; postocular lobes broad, distinct; disc strongly 

 loss densely punctured, deeply channeled, lateral tubercles acute, sides and 

 dorsal line clothed with white scales. Elytra with punctured striae, inter- 

 spaces flat, shining, slightly punctulate. Thighs not toothed, claws slender, 

 simple. Length 1.3 mm.; .05 inch. 



Detroit, Messrs. Hubbard and Schwarz. A small species remarkable for 

 the less pubescent upper surface, and peculiar Coloration; seems related to 

 the European C. querceti, but differs by the quadrate lateral white spot of 

 the elytra. 



15. C. medialis, n. sp. 



Oblong, depressed, brown, beneath densely clothed with pale scales, 

 above with fine brown hair-like scales. Head punctured, beak long, slen- 

 der, curved, shining and nearly smooth towards the tip, punctured and sub- 

 striate near the base. Prothorax wider than long, obliquely rounded on 

 the sides, strongly narrowed and constricted near the tip, apical margin 

 elevated, postocular lobes broad, indistinct; disc strongly punctured, dor- 

 sal channel not deep, lateral tubercles small but acute; sides and dorsal 

 line clothed with pale scales. Elytra with punctured striaB, interspaces 

 wider, flat, strongly rugose; sutural interspace and base of second densely 

 clothed with pale scales; sides of elytra, especially behind the middle, less 

 densely clothed with similar scales. Funicle 6-jointed. Thighs not 

 toothed, claws slender, not toothed. Length 2 mm. ; .08 inch. 



Two specimens, Lake Superior. The beak is similar in the two speci- 

 mens, but one of them, which I infer to be the tf, has the last ventral seg- 

 ment very feebly impressed. 



1<>. C. septentrionalis Gyll., Sch. Cure, iv, 492. 



Lake Superior, Canada, and Pennsylvania; not rare. A small species, 

 densely clothed above with depressed, scale-like pubescence, which has a 

 feeble metallic lustre ; in many specimens there is a faintly marked paler 

 scutellar spot. The lateral tubercles of the prothorax are very small; the 

 funicle 6-jointed; the thighs not toothed; the claws slender, not toothed. 

 Length 2 mm. ; .08 inch. 



17. C. Zimmermani Gyll., Sch. Cure, iv, 492. 



Canada to Texas. Still smaller, brown, clothed with small, pale scales 

 above; lateral tubercles of prothorax very small; antennas, thighs and claws, 

 as in the preceding. The elytra and legs usually of a paler brown. Length 

 1.5 mm.; .06 inch. 



18. O. puberulus, n. sp. 



Oblong, depressed, blackish with a feeble metallic glimmer, beneath 

 clothed with pale scales, above with short, coarse pubescence. Prothorax 

 wider than long, much narrowed and constricted in front, apical margin 

 elevated, postocular lobes broad, not distinct; densely punctured, dorsal 

 channel distinct, not very deep, lateral tubercles small, acute. Elytra 



