Art. 18 XEW XORTH AMEEICAN WEEVILS CHITTEXPEX 3 



long as third plus fourth. Prothorax distinctly wider than long, 

 moderately arcuate at the sides, rather strongly tubulate at apex, 

 where it is slightly wider than the head; base truncate, depression 

 at middle shallow; surface with rather large shallow subvariolate 

 punctures, very sparsely irregularly set ; interspaces distinctly, finely, 

 and closely punctulate. Elytra not wider at base than pronotum, 

 sides parallel, strial punctures moderate in size, not closely set, first 

 two striae rather feebly depressed at base, fourth and fifth also 

 feebly depressed ; vestiture rather feebly mottled. 



All tibiae finely, not very distinctly serrulate on the inner margin. 



Male. — Kostrum shorter than the pronotum, also thicker than in 

 the female. First ventral segment rather widely, distinctly but not 

 deeply depressed at the middle. 



Length, 8-9 mm. ; width, 2.2-2.8 mm. 



Type locality. — Brownsville, Tex., November 19, 1911. Two ex- 

 amples- 



Type. — Female, in the Illinois State Natural History Survey at 

 Urbana, 111. Allotype, male. Cat. No. 29030, U.S.N.M. 



Nearly related to marginatus Say, differing notably by the slen- 

 derer, more distinctly arcuate rostrum with its much finer and 

 denser punctation, and by the wider and more distinctly tubulate 

 pronotum on which its larger punctures as well as punctules are 

 comparatively indistinct. The male is not so strongly marked as 

 the female type, the outline of the pronotum being less tubular an- 

 teriorly, while the elytra at the base are just perceptibly wider with 

 fine acute angles. On the male rostrum there is also a faint line 

 running from the interocular to the interantennal fovea showing a 

 slight tendency to the development of a carina, which is probably 

 never present. 



LIXUS ASPEEICOLLIS, new species 



Comparatively robust, a little more than twice as long as wide; 

 black, strongly shining, somewhat strongly depressed, vestiture 

 mostly fine gray and very sparse. Head finely punctate, fovea small 

 but distinct, in front of which there is a distinct fine carina scarcely 

 extending to the apex of the scrobes. Rostrum nearly as long as the 

 prothorax, thick, less than three times as long as wide, moderately 

 arcuate, of nearly uniform dimensions, although a little wider near 

 the apex from the dorsal view ; scrobes extending fully two-thirds 

 from base to apex; surface at base very strongly and coarsely 

 punctate on sides, a little finer on anterior face. Antennae dark 

 reddish, sparsely covered with rather coarse, short gray hairs; club 

 densely covered as usual ; first and second funicular joints subequal 

 in length and width, each shorter than the succeeding two combined. 

 Prothorax short, distinctly wider at base than long, narrowed an- 



