DESCRIPTION OF NEW SPECIES 173 



margin rather oblique, obtusely angulate anteriorly ; tenth noticeably less 

 stout, about as long as wide, quite triangular ; eleventh obovate, shorter, 

 about a half longer than wide. Fifth ventral broadly and evenly arcuate 

 at apex, somewhat broadly flattened, margin slightly deflexed. 



Measurements. Length (Types), 3.0-3.5 mm.; width, 1.1-1.3 mm. 



Holotype, male, and allotype, female, in my own collection ; paratypes 

 in that of Mr. F. W. Nunenmacher, who collected the material on June 4, 

 1913. 



Type locality. Lassen County, California. 



Twenty specimens studied. Fulvipilosus resembles amplicollis Casey, 

 from which it differs in the densely punctured pronotum, male sexual 

 characters and more or less fulvous pubescence. 



Listrus cervicalis, new species. Form oblong-oval and moderately 

 convex. Color black, with a slight aeneous lustre, chiefly on the head and 

 pronotum ; antennae more or less piceous, second joint rufo-piceous ; tibiae 

 and tarsi piceous. 



Pubescence moderate in length, abundant and plumbeo-cinereous in 

 color, longer on the under surface of the body, cinereous on the sterna 

 and sternal side-pieces, slightly darker on the abdomen. Brownish black 

 hairs of the elytra are arranged in rather large maculae as follows: A 

 narrow and elongate humeral and a rounded parascutellar macula ; post- 

 basal macula at middle of each with a tendency to diffuse toward the 

 humeral ; a submedian rather wide and more or less zig-zag fascia which 

 may or may not be interrupted at the suture or at middle of each elytron ; 

 subapical transverse row of four rather large maculae ; apical maculae of 

 good size. There is a tendency for the maculae to coalesce transversely to 

 form five transverse dark fasciae. Pronotal central figure constricted and 

 more or less divided by a narrow median line of pale hairs into four 

 maculae, lateral vittae broken into two distinct maculae; hairs of the 

 central area of the frons more or less dark. Hairs of the pronotum are 

 rather stiff, closely recumbent and somewhat abundant. 



Head rather large, about as long as wide, eyes moderately prominent 

 and evenly convex. Front broadly impressed, a slight median convexity 

 near the epistomal base, punctures moderate in size and rather sparse, 

 denser at the periphery, intervals more or less smooth and more or less 

 feebly punctulate or subindentate ; muzzle short and rather broad, margin 

 evenly arcuate from side to side. Antennae quite long, somewhat slender, 

 and only slightly compressed, feebly incrassate and similar in the sexes ; 

 second joint oval narrowing somewhat toward base ; third cylindro- 

 obconical and as long as the fourth, the latter wider and triangulo- 

 obconical ; fifth wider, about as wide as the ninth, triangular and just a 

 little longer than wide, quite prominent anteriorly ; sixth to the eighth 



