152 PROCEEDINGS OF THE NATIONAL MUSEUM. 



rather short and subequal, faintly constricted mesially, more or less 

 fciintly punctate with fuscous above, the lateral lobes with a broad 

 piceous belt crossing the prozoua above, and sometimes continued across 

 the metazona, but usually obsolete or subobsolete there, sometimes 

 fading, sometimes sharply denned below, the lower portion of the lobes 

 usually lighter colored than elsewhere, repeating the color of the genae; 

 front margin subtruncate, hind margin very broadly rotundato-angu- 

 late, in some females with no sign of augulation but very broadly 

 convex; median carina percurrent but generally feebler on the prozona; 

 lateral carinae marked by a distinct though rounded angle; prozona 

 distinctly longitudinal (male) or subquadrate (female), one-fourth to 

 one-third longer than the closely punctate metazoua. Prosternal spine 

 short (female) or very short (male), conical, erect; interspace between 

 the mesosternal lobes nearly twice as long as broad (male) or slightly 

 longer than broad (female). Tegmina ovate, well rounded, much less 

 than twice as long as broad, rather shorter than tbe pronotum, brown- 

 ish fuscous, generally cinereous in the anal field. Hind femora fusco- 

 ferruginous or fusco testaceous, twice banded rather obliquely with 

 black, which is confluent on the lower half of the outer face, so as to leave 

 above a large basal and median patch of the lighter color; the lower 

 face is reddish, and the genicular arc fuscous; hind tibiae glaucous, 

 often mottled or suffused with luteous toward the base, and generally 

 with a basal anulus of the same, the spines black in their apical half, 

 ten to twelve in number in the outer series. Extremity of male abdo- 

 men oblong clavate, well rounded, well upturned, the supraaual plate 

 triangular with slightly convex sides and rectangulate apex, the median 

 sulcus slender, not very deep, and percurrent, bounded by sharp 

 but not very high walls; furcula consisting of a pair of elongate, 

 slender, parallel, straight denticulations or fingers as long as the last 

 dorsal segment, resting outside the ridges of the supraaual plate; 

 cerci enlarging slightly at the base, then gradually enlarging in the 

 basai half, beyond equal, apically well rounded, the whole forming a 

 broad, much incurved and slightly torqueate plate, whose apical half 

 is so deeply sulcate that its longitudinal halves are nearly at right 

 angles; infracercal plates concealed; subgenital plate broad, fully as 

 broad as long, the lateral margins abruptly elevated a little apically, 

 but not prolonged posteriorly, the apical margin strongly rounded, 

 entire. 



Length of body, male, 17 mm., female, 20 mm.; antennae, male, 9 

 mm., female, mm.; tegmiua, male, 3 mm., female, 4.25 mm.; hind 

 femora, male, 10 mm., female, 11 mm. 



Six males, 17 females. Yuba County, California (L. Bruner); Moun- 

 tains near Lake Tahoe, Placer County, California, October, Heushaw, 

 Wheeler's expedition, 1876; Kern County, California, October (U.S. 

 N.M.); Kern County, California, Coquillett (U.S.N.M. Eiley collec- 

 tion); Los Angeles County, California, May, September, Coquillett 

 (same). 



