AMERICAN COLEOPTERA. 175 



elytra, the more cordate prothorax, the dusky elytral bands and finally 

 by the less elongated terminal portion of the eleventh joint of the 

 antennae. 



Mecynotarsus candidns. — Very pale yellow, clothed with fine cinere- 

 ous pubescence; disc of prothorax nearly round, not longer than wide, horn 

 with six rounded teeth each side, and an apical one; bicarinate at the base, 

 without a short medial carina. Length 2 mm.; .08 inch. 



Columbia, S. C. ; Dr. Zimmermann. Less elongate than the Cali- 

 fbraian M. delicatulm Horn, with the carinse of the horn less distant, 

 and the space between them not carinate. The elytra are uniform in 

 color, without a central cloud. 



Mecynotarsus elegans. — Brown, densely clothed with depressed silvery 

 pubescence, horn, disc of prothorax, sutural stripe as far as the middle of the 

 elytra, transverse band about the middle and oblique band behind the middle 

 sericeous brown; horn with two approximate carinae extending nearly to the 

 tip, with three large teeth each side, and a still broader apical tooth. Length 

 1.7 mm. ; .07 inch. 



Capron, Florida; Messrs. Hubbard and Schwartz; abundant on the 

 seashore. The disc of the prothorax, as in M. Candidas, is nearly 

 globose, not lon<rer than wide; the horn is a little shorter than the 

 disc, and the teeth are much larger and stronger than in the other 

 two species. 



Xylophilns impressns. — Brown, pubescent, head dusky. Prothorax 

 subquadrate, broader than long, broadly rounded at the sides and tip; very 

 finely punetulate, with a large fovea each side behind the middle. Elytra 

 nearly one-half wider than the prothorax, elongate oval, transversely impressed 

 near the base, finely punctured, dusky behind the middle. Antennae with the 

 outer joints gradually a little wider; eleventh joint ovate, pointed. Length 

 1.2 mm.; .05 inch. 



Texas, two specimens, Belfrage. Related to X. piceus, but smaller, 

 with the thorax broader, and the impressions deeper and quite sepa- 

 rate; the elytra more oval, and the antennae more slender, with the 

 last three joints comparatively wider. 



Xylopliillis ater. — Elongate, black, nearly uniformly densely punctured, 

 clothed witb ratlier long cinereous pubescence. Prothorax as long as wide, sides 

 rounded in front, tip rounded, disc moderately convex, obsoletely channeled near 

 the base. Elytra a little wider than the prothorax, oblong elongate, parallel, 

 rounded behind, scarcely impressed near the base. Antennae rather stout, 

 hairy, slightly thickened externally, last joint larger, ovate pointed. Length 

 2 mm. ; .08 inch. 



One specimen, Texas, Belfrage. 



Xylopliilu.s nebulosns. — Blackish-brown, opaque, finely pubescent. 

 Head and prothorax very densely punetulate, the latter longer than wide, 

 gradually slightly narrowed in front, feebly rounded on the sides. Elytra 

 one-half wider than the prothorax, oblong elongate, sides parallel rounded 



