270 CLTRCULIONID^. 



[LeCoute. 



Elytra not tuberculate ; or only feebly mnricate to- 

 wards the tip 3. 



2. Black, thinly pubescent; elytra with a white basal 



spot 3. tenuipes. 



Brown, mottled with white hair 4. asper. 



8. Tibiae slender, not angulated 4. 



" with parallel sides, suliaugulated near the base 5. cruralis. 



4. Apical teeth of prothorax distinct 6. nebulosus. 



" " " wanting 7. nasalis. 



O. Thighs armed with a tooth 8. flavicaudis. 



1. O. curtus Gyll., Sch. Cure, iv, 287; Ceiitorliynclms curt. Say, Cure. 

 29. ed. Lee. i, 298. 



Southern States; two specimens. 



2. O. acephalus Grerm. , Sch. Cure, iv, 289; Falciger aceph . Say, Jouru. 

 Ac. Nat. Sc. Phila. iii, 309; ed. Lee. i, 173; O. subuUrostris Gyll., Sch. 

 Cure, iv, 288; G. leprosus Boheman, Sch. Cure, viii, 1, 394. 



Middle and Western States. The scales are sometimes mottled, some- 

 times nearly uniform in color. Tlie beak is cylindrical in rf , narrowed 

 towards the tip in 9 • 



3. C. tenuipes, n. sp. 



Black, thinly clothed with fine depressed hair-like scales. Beak punc- 

 tured, cariuate. Prothorax very coarsely punctured, dorsal channel deep 

 towards the base, lateral tubercle small but acute. Elytra with the striae 

 wide, deep and punctured; interspaces hardly wider than the striae, rough 

 with small acute tubercles; base with a common whitish spot at the scu- 

 tellar region. Legs slender, thighs unarmed, tibiae slightly curved; front 

 pair without apical process. Claws cleft as usual. Length 2.5 mm. ; .10 

 inch. 



Texas, Belfrage; one (j^. Greatly resembles in appearance a Ceuto- 

 rhynehus, but the beak is less slender, and the mesosteruum is deeply con- 

 cave 



4. O. asper, n. sp. 



Brown, mottled with coarse white scale-like hairs. Beak rather stout, 

 coarsely punctured, tlattened above, feebly carinate. Prothorax coarsely 

 jiunctured, dorsal channel obsolete, lateral tul)ercles small, acute. Elytra 

 deeply striate, interspaces wider than the stria?, convex, each with a row of 

 large, distant, acute tubercles; tibi;B slender, slightly curved, front pair with 

 a very small spine directed outwards, at the external apical angle. Length 

 2.2 mm,; .085 inch. 



Texas, Belfrage. The white mottlings of the elytra do not form a dis- 

 tinct pattern, there is, however, a tendency to transverse bands, and a cru- 

 ciform spot near the base. 



5. C cruralis, n. sp. 



Black, thinly and irregularly mottled with white, scale-like hairs. Beak 



