LeConte.] 



CLEo:t^iNi. 153 



slightly tubulate, base strongly emarginate each side, middle lobe rounded, 

 side angles acute ; disc punctulate with a few very large scattered punc- 

 tures ; medial carina distinct, basal excavation narrow, deep; sides and 

 broad dorsal vittse becoming narrower in front, pubescent. Elytra as in 

 the preceding; except that the striae are composed of distant punctures; the 

 second and sixth interspaces are less pubescent and darker. Hind tarsi as 

 in C. vittatus. Length 6.5 mm.; .25 inch. 



One specimen from Colorado, in the collection of Dr. Horn. 



CLEONASPIS n. g. 



C. lutulentus differs from Cleonus by the hind tarsi being narrow, with 

 the first joint longer than the second, and the third evidently shorter, 

 not wider, and emarginate, not bilobed, and not spongy beneath. The 

 beak is cylindrical, rather stout, a little shorter than the prothorax, and 

 not at all carinate. The prothorax is a little longer than wide, slightly and 

 gradually narrowed in front, feebly constricted at the apex ; the base is 

 oblique and very feebly emarginate each side, with the middle lobe obtuse, 

 scarcely prominent; the side angles are acute; the disc sparsely, coarsely 

 punctured, obso'etely carinate, and the basal excavation is hardly percepti- 

 ble. The elytra are transversely impressed at base, the humeri are not 

 rounded, the sides are straight, and then almost regularly rounded to the 

 tip; uniformly pubescent ; the strise are composed of large, rather approx- 

 imate punctures. The scutellum is not depressed, triangular, longer than 

 wide. The antennte are more slender than in Cleonus, with the first joint 

 of the funiculus longer than the second, which is equal to the third; joints 

 2-6 rather closely connected. The antennal grooves are not confluent 

 below, or I should place this species in Mecaspis. 



1. O. lutulentus. Cleonus kit. Lee. Col. Kans. 18. 



Two specimens. New Mexico. The pubescence is of a uniform dirty 

 brown, except that there is a slightly darker broad dorsal prothoracic 

 stripe, becoming broader towards the base. 



LIXUS Fabr. 



The species of this genus are generally more slender than those of 

 Cleonus, though not always. The tarsi ai'e broad and spongy beneath, 

 with the third joint deeply bilobed. The beak is cylindrical, not thickened 

 at tip, usually slender, except in L. pleuralis and texanus, and not cari- 

 nated, except in L. pleuralis and sylvius. The antennal grooves commence 

 at some distance from the tip of the beak. The antennae, except in L. pleu- 

 ralis and texanus are slender, with the first joint of the funiculu"^ thicker, 

 and the second as long as the two following united ; in those two the funi- 

 culus is less elongated, less slender, and the second joint is somewhat less 

 elongated. 



The species are numerous and difficult to distinguish; they are covered 

 with a pollinose yellowish powder which is easily rubljed off, and in addi- 

 tion, some of them are pubescent. In several species the apices of the 



PROC. AMER. PHILOS. 80C. XV. 96. T 



