6 PROCEEDINGS OF THE NATIONAL MUSEUM Vol 77 



apices nearly closed ; disk flattened at base, scarcely depressed in post- 

 scutellar region, strongly impressed at sides. Vestiture of fine, 

 silvery gray hairs, in basal half moderately short, in apical half, 

 especially toward apex, longer, vittae more clearly defined. Intervals 

 vittate as follows : Sutural, third, fourth (not strongly defined) , and 

 last lateral four, these latter practically separated by one or more 

 rows of strial punctures; strial punctures larger, deep, quadrate, 

 closely placed in rows, first and second rows close together with 

 punctures more closely set than those of the other striae. Lower sur- 

 face thickly coated with long gray and yellow hairs with longer tufts 

 at the sides, not distinctly ocellate. Anterior femora rather strongly 

 clavate, all femora densely clothed with long silvery gray hairs. An- 

 terior tibiae not serrulate. 



Female. — Rostrum nearly as long as the pronotum, not at all 

 carinate. 



Male. — Eostrum shorter and much thicker, about two and a half 

 times as long as wide, more or less carinate from the frontal to the 

 infra-antennal fovea. 



Length, 7-9 mm. ; width, 2-2.3 mm. 



Type locality. — Cortez, Colo., June 19, 1925. 



Ty^e.— Female, Cat. No. 29037, U.S.N.M. Type, allotype, and 

 paratype. Three paratj^pes in the collection of the State Agricul- 

 tural College at Fort Collins, Colo. 



Quite distinctive, bearing no resemblance to any other species in 

 our fauna. The general appearance as viewed from above is more 

 like Gleonus than Lixus since the elytra are decidedly striate-vittate, 

 much more strongly than in ivae^ new species. The punctation of the 

 head and base of the rostrum, and especially that of the pronotum 

 and elytra, is unique. The short thick rostrum is unlike that of 

 scroticolUs Boheman and the fact that the short carina is distinct 

 only in the male is unusual also. 



LIXUS ACIROSTRIS, new species 



Elongate cylindrical, nearly four times as long as wide, black, 

 antennae dark brown, rostrum polished black ; vestiture consisting of 

 sparse minute silvery gray scales on dorsum; prothorax and elytra 

 with distinct but inconspicuous, rather narrow lateral vittae of 

 longer pubescence covering, although not concealing, the punctation 

 of the last four intervals. Rostrum in the female fully as long as 

 prothorax (as viewed from the side), continuous with the head, 

 extremely slender, subcylindrical, very feebly arcuate, slightly bent 

 backward at the middle where it is also distinctly widened at the 

 sides, subcarinate in basal half; surface finely punctate in apical 

 half, distinctly sparsely punctate in lines beginning with the head 



