OOLEOPTKHA. 



139 



118. S. talioensis n. sp. — Form very moderately robust. Pubescence 

 very short, semi-erect, sparse, somewhat coarse, pair fulvous on the abdomen, 

 almost invisible on the remainder of the dorsal surface. Head moderate, 

 twice as wide as long; in'terocular surface feebly depressed, slightly more 

 than twice as wide as the eye; equally trilobed by the rounded and distinct 

 snlcations ; intermediate surface feebly and evenly convex ; punctures fine, 

 extremely close and confused; interspaces almost lustreless; ocular lines 

 meeting at less than one length in advance; antennae short, as long as the 

 width of head, robust, piceous-black, club distinct; joints three, four, and 

 five equal, sixth slightly longer and less robust than the seventh, eighth 

 slightly elongated, sub-globular, joints of club increasing very rapidly in 

 length, last two equal in width and much thicker than the ninth, last joint 

 as long as the eighth and ninth together ; maxillary palpi moderate, piceous- 

 black, first joint slightly paler, piceo-testaceous. Prothorax widest at the 

 middle, where it is more than five-sixths as wide as the head, and very dis- 

 tinctly narrower than long ; sides thence equally convergent anteriorly and 

 posteriorly, and nearly straight, very feebly arcuate in the former direction, 

 slightly sinuate in the latter ; anterior and posterior margins sub-equal in 

 length, the former slightly the more arcuate; surface very strongly tuber- 

 culate near the basal angles, feebly and transversely impressed behind the 

 apex, and distinctly swollen along the borders of the canaliculation ; punc- 

 tures fine, excessively close and confused; interspaces almost lustreless; 

 canaliculation large, fusiform, rather deeply impressed and conspicuous, 

 terminating at nearly equal distances from the base and apex, three-fourths 

 as long as the pronotum. Elytra at base as wide as the head ; sides nearly 

 parallel, slightly longer than the width at base, nearly straight, very feebly 

 arcuate near the apices ; together broadly, roundly, and strongly emarginate 

 behind; suture one-fifth longer than the pronotum; surface nearly evenly 

 convex, deeply, somewhat coarsely, extremely closely and irregularly punc- 

 tured and channeled ; interspaces acute and very feebly shining. Abdominal 

 segments decreasing nearly uniformly aud very gradually in width, first 

 slightly narrower than the contiguous elytra ; surface very convex, coarsely, 

 closely, and evenly punctulate ; transverse carinae tricuspid, cusps long, 

 strong, finely acicular toward the tips, nearly equal in length, conspicuous, 

 intervals strongly sinuate; lateral border almost obsolete, except on the first 

 segment and at the bases of the others. Legs moderate, slender, piceous- 

 black above, femora blackish-fuscous beneath ; first joint of the posterior tarsi 

 one-half longer than the second, as long as the second and third together. 



Male. — Unknown. 



Female. — Sixth ventral segment just perceptibly and very broadly angulate 

 at the apex. 



Length 2.6 mm. 



Luke Tahoe, Nevada, 1. 



119. S. nimliosiis n. sp. (Fauvel MS.). — Form rather slender. Pubes- 

 -cence very sparse, rather short and coarse, sub-recumbent, very pale fiavo- 

 cinereous on the abdomen. Head moderate, twice as wide as long; inter- 

 ocular surface strongly depressed, nearly three times as wide as the eye; 



