408 AN^THRIBID^. 



[LeConte. 



CHORAGUS Kirby. 



1. O. Zimmerraanni, n. sp. 



Oval-subcylindrical, brown, without lustre, slightly pubescent, pro- 

 thorax densely punctured, elytra deeply striato-punctate, interspaces 

 densely and finely punctulate, antennae and legs yellow. Length 1.3 mm. ; 

 .06 inch. 



North Carolina ; Dr. C. Zimmermann. According to description this 

 species differs from the European C. Sheppardi by the prothorax not being 

 very finely punctured, and from C. piceus by the elytra not being shining. 



2. O. Sayi, n. sp. 



Elongate-oval, subcylindrical, blackish, prothorax densely punctured, 

 slightly pubescent, elytra deeply striato-punctate, shining, interspaces less 

 densely and more distinctly punctulate; antennae dark testaceous, feet 

 piceous. Length 2.3 mm. ; .09 inch. 



Washington, D. C. ; Mr. Ulke. Larger and narrower than the preced- 

 ing, with darker legs, and shining elytra. 



Tribe IV. xenorchestini. 



The species of this tribe have lost all appearance of the family, and in- 

 deed of Rhyncliophora. The only one known to me in our fauna might 

 be readily mistaken for a small Cryptocephalus; while the Maderan species 

 figured by Wollaston* seems to resemble in miniature Oibbium- 



The body is oval or ovate, very convex, and quite glabrous. The beak 

 is so short as to be not distinct from the front ; the antennae are inserted 

 upon tlie front, which is deflexed ; the eyes are small, transverse oval. 

 Tlie first and second joints of the antennae are longer and stouter ; 3-7 

 shorter and thinner, nearly equal ; eighth subtriaugular, a little wider, 

 9-11 wider forming a loose club. Prothorax narrowed from the base for- 

 wards, ridge entirely basal, flexed at the hind angles, and continuing a 

 short distance along the sides. Scutellum invisible. Elytra not striate. 

 Tarsi with the first joint elongated ; second triangular, emarginate; third 

 bilobed ; claws slender, not toothed. 



Two genera would seem to be indicated ; the first of which is unknown 

 to me in nature 



Upper surface smooth XENOROHESTES. 



Prothorax punctured ; elytra with irregular double 



rows of punctures EUXENUS. 



XENOROHESTES Woll. 



1. X. americanus Motsch., Bull. Mosc. 1873, ii, 251. 

 Unknown to me ; found on bushes near Mobile, Alabama. The follow- 

 ing is the description given by Motschulsky: 



Statura et color X. saltUantia sed duplo minor ; gibbosus, acariformis, 



* Insecta Maderensia, pi. viii, f. 8. The maxilla has a strikingly Adephagous 

 form, the inner lobe being curved, acute, and sparsely spinose on the inner 

 edge. 



