i , , ,,nte.] CEUTOKHY^CHINI. 271 



slender, punctured, substriatc near the base, finely carinate. Prothorax 

 very coarsely punctured, dorsal channel broad, not deep, lateral tubercles 

 acute. Elytra deeply striate, interspaces convex, wider than the striae, uot 

 tuberculate; there is a distinct cruciform white spot near the base. Tibia; 

 slender, straight, with parallel sides from near the knee to the tip; front 

 pair without spine at the outer apical angle. Length 2.2 mm. ; .085 inch. 



Anticosti, Mr. W. Couper, abundant; Lake Superior, Pennsylvania and 

 Texas. Easily known by the peculiar form of the tibiae, the external mar- 

 gin of which is obtusely angulated near the knee, but not at all dilated, 

 nor grooved. 



0. C. nebulosus, n. sp. 



Broadly ovate, very dark brown. Beak stout and long, punctured, not 

 carinate, scarcely striate towards the base. Prothorax coarsely punctured, 

 broader than long, strongly narrowed in front; dorsal channel not deep, 

 apical tubercles acute, not very distant, lateral tubercles acute, prominent. 

 Elytra indistinctly mottled with very fine brown pubescence, and very 

 small, white scales, not forming a definite pattern; striae deep, punctured, 

 interspaces rugose, very finely muricate towards the tip. Thighs not toothed, 

 tibise slender, nearly straight. Length 2 mm.; .08 inch. 



Detroit, Michigan; Messrs. Hubbard and Schwarz. I have three larger 

 specimens, from Georgia and Pennsylvania, which I refer to this species, 

 though they are of a darker color, and the white spots of the elytra are 

 more distinct. 



7. C. nasalis, n. sp. 



Black, pruinose with a thin clothing of very fine white hair. Beak 

 rather stout, coarsely punctured, flattened above, with three distinct 

 carina3. Prothorax coarsely punctured, dorsal channel deep behind, obso- 

 lete in front, lateral tubercles small, acute. Elytra with broad deep striae, 

 interspaces hardly wider than the striae, flat; suture with a short line of 

 white scales extending from the base for one-fourth the length. Tibiae 

 slender, slightly curved, front pair without spine at outer apical angle. 

 Length 3.5 mm.; .14 inch. 



Texas, Belfrage, one <?. In this, as in C. tenuipes, asper and cruralis 

 the postocular lobes of the prothorax are indistinct, and the front margin 

 is nearly straight as far as the prosternum, which in the other species is 

 deeply emarginate in front. 



8. C. flavicaudis Boh., Sch. Cure, viii, 1, 397. 



Unknown to me. The thighs are described as having a short, obtuse 

 tooth beneath. This character will distinguish it from those above men- 

 tioned. 



ACALLODES n. g. 



This new genus is established upon an insect which has the same pyri- 

 form body as the Europe m Scleropterus, but differs from th-it genus by the 

 funicle having seven distinct joints, of which the first is longer and 



