AET. 18 NEW NOETH AMEKICAN WEEVILS CHITTENDEN 5 



feebly arcuate at the sides, narrowlj?^ impressed at the middle and 

 in the basal half, more deeply at the base; disk coarsely sparsely 

 punctate, with closely-set fine punctules in the intervals, surface of 

 disk moderately irregular, with dense yellowish red hairs in the 

 impression and at the sides, not forming lines. Elytra at base 

 slightly narrower than prothorax, humeri obsolete, sides subparallel 

 in anterior three-fourths, distinctly narrowed at the middle, widen- 

 ing again in apical half, apices not divergent, disk flattened at: 

 middle, lightly impressed near the base, but distinctly impressed at 

 the base of the third, fourth, and fifth striae ; strial punctures small^ 

 moderately closely-set, of irregular shape, not rounded. Vestiture 

 composed of a dense coating of extremely fine, short, gray squamules 

 with slight reddish and yeliovfish hues, not mottled, not forming 

 longitudinal lines, punctation largely concealed by the vestiture. 

 Ventral surface with longer parallel gray hairs. 



Female. — First ventral segment convex. 



Length, 8.5 mm. ; width, 2.2 mm. 



Type locality. — Colorado. One specimen. 



Ty^e.— Female, Cat. No. 28822, U.S.N.M. 



This appears to be a distinctive species with perhaps some rela- 

 tionship to concavus Say, the rostrum of the female resembling the 

 latter in structure, although it is proportionately not so long and 

 more nearly perfectly cylindrical. A striking character is the nar- 

 rowed or slightly constricted middle of the elytra, possibly individual. 



LIXUS PERSTRIATUS, new species 



Elongate cylindrical, three and a half times as long as wide, mod- 

 erately shining black throughout; vestiture of prothorax white at 

 sides, composed of long pendant hairs, elytra with wide lateral vitta, 

 and narrow sutural and discal and sublateral vittae, composed of sil- 

 very gray hairs. Head finely punctulate throughout, intermixed with 

 very large coarse punctures extending from the occiput and en- 

 croaching far on the rostrum ; fovea large, rounded. Rostrum in the 

 female robust, about three and a half times as long as wide, feebly 

 arcuate, of nearly uniform diameter ; surface very finely punctulate, a 

 few small punctures near the base and larger ones at the sides. First 

 and second funicular joints subequal in length, first only a little wider 

 than second, second not so long as third plus fourth. Pronotum 

 nearly as long as wide, subquadrate, tubulate at apex ; surface rather 

 narrowly impressed at the middle in basal half, very deeply, coarsely 

 and very irregularly variolate-punctate, punctures closely set, gradu- 

 ally increasing in size toward the base; apex and interspaces finely 

 punctulate. Elytra about two and one-third times as long as wide, 

 scarcely wider at base than the pronotum, but distinctly wider at 

 humeri ; sides parallel, suddenly narrowed toward the apex ; extreme 



