16 PROCEEDINGS OF THE NATIONAL MUSEUM Vol 7T 



subglabrous black. Head finely distinctly punctate; interocular 

 fovea well defined, oblong. Kostrum about as long as the prothorax, 

 slender, feebly arcuate, at base and on head between eyes strongly 

 punctate in longitudinally impressed rows, more finely punctate 

 toward apex. Scrobes scarcely extending three-fifths from the base. 

 Antennae reddish, long and slender. First funicular joint short and 

 moderately wide; second very narrow and slender, nearly one-third 

 longer than first and longer than the two succeeding joints together. 

 Prothorax about as wide as long, feebly tubulate at apex, feebly 

 arcuate at sides, widest just behind the middle; disk somewhat deeply 

 impressed at middle in posterior half, surface moderately deeply, 

 variolately punctate, punctures irregularly set, interspersed with fine 

 punctules, closely set, and some sparse vestiture toward base; sides 

 with longer irregular vestiture. Eh^tra three times as long as wide, 

 humeral angles prominent but not tumid, sides subparallel in apical 

 three-fifths ; base of first two intervals rather flat, scarcely impressed, 

 extreme apices very slightly everted; strial punctures rounded in 

 fairlj'^ regular rows; vestiture scant anteriorly, dense toward apex, 

 mottled. Ventral surface moderately hairy, denser at posterior- 

 extremes of each segment, last segment still denser. Legs slender; 

 first pair of femora distinctly clavate. 



Female. — Rostrum as described. First and second abdominal seg- 

 ments with a somewhat deep median impression. 



Length, 9.7 mm,; width, 2.6 mm. 



Type locality. — ^Lake Okoboji, Iowa, July 6, 1917 (L. L. Buchanan). 



r^^e.— Female, Cat. No. 29027, U.S.N.M. Unique. 



This species looks more slender than the measurements indicate. 

 Some of the more salient characters include, besides the slenderness, 

 the strongly depressed body, polished black color, sparse vestiture, 

 and long slender rostrum with impressed rows of punctures at base, 

 flat rather than impressed scutellar portion of elytra, and the long 

 ventral impression of the female. The antennal structure indi- 

 cates some affiliation with fuUcJii Casey, from which it differs by 

 many characters, more especially by the prominent humeral angles 

 not being distinctly tumid. It is, moreover, much slenderer and has 

 much less vestiture than that species. 



LIXUS BUCHANANI, new species 



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

 shining ; vestiture gray, sparse, with broad lateral vitta on prothorax 

 onl5^ Elytra strongly mottled with gray. Rostrum slender, dis- 

 tinctly longer than pronotum, cylindrical, moderately arcuate, not 

 at all carinate ; surface finely, strongly, sparselj'' punctulate through- 

 out. Head a little more coarsely punctulate ; interocular fovea small. 

 Antennae dark piceotis, inserted a little posteriorl}?^ from the middle. 



