CALIFORNIA ACADEMY OF SCIENCES. 301 



proportion to the width of the segment. Each dorsal seg- 

 ment has at base two short lateral carinse from the trans- 

 Terse ridge; the median carina is entirely obsolete. 



T, linearis n. sp. — Very slender; body black throughout, legs piceous, 

 tibiae toward tip and tarsi pale testaceous; antennas fuscous, slightly paler 

 toward base; integuments polished; pubescence very fine, moderately deuse, 

 densest on the elytra, more sparse but longer, more erect and coarser on the 

 abdomen, very pale rlavo-ciuereous. Head as wide as long; sides convergent 

 and arcuate behind the eyes; occiput rather strongly convex, finely, evenly 

 and rather densely punctate; antennae slender, slightly longer than the head 

 and prothorax together, second and third joints very slender, equal in length 

 and slightly shorter than the first, fourth scarcely more than one-half as long 

 as the third, longer than wide, tenth slightly wider than long, eleventh as 

 long as the two preceding together, very obtusely rounded at tip; front very 

 feebly impressed in the middle between the eyes. Prothorax widest at scarcely 

 one-third its length from the apex where it is slightly wider than the head 

 and just visib'y wider than long; sides moderately convergent anteriorly and 

 distinctly arcuate, less convergent posteriorly and nearly straight; base very 

 slightly narrower than the disk and very slightly wider than the apex, broadly 

 and rather strongly arcuate; apex very feebly arcuate; basal angles obtuse 

 but not rounded; disk transversely convex anteriorly, narrowly and feebly 

 impressed in the middle posteriorly, very finely and moderately densely 

 punctate. Elytra at base distinctly wider than the pronotum; sides parallel 

 and feebly arcuate; apical angles slightly produced, acute; together quadrate, 

 slightly incurvate at apex; slightly emargiuate at the suture; disk distinctly 

 longer than the pronotum, impressed on the.suture near the scutellum, feebly 

 convex, very finely, feebly, evenly and rather sparsely punctate; punctures 

 slightly asperate, forming indefinite and broken transverse rows. Abdomen 

 distinctly narrower than the elytra, scarcely wider than the pronotum; sides 

 to the apex of the sixth segment parallel and feebly arcuate; punctures, car- 

 ina? and border nearly as in experta. Legs very sleuckr; first four joints of 

 the posterior tarsi decreasing uuiformly aud rapidly in length, first much 

 longer than the second. Length 3.3-3.5 mm. 



California (Yountville, Napa Co., 1: Mt. Diablo, 1; 

 Booneville, Mendocino Co., 1). 



The type is a male; the sixth segment is broadly and 

 moderately bilobed at apex, the notch being triangular, very 

 small in proportion to the size of the segment, and about 

 three times as wide as deep. The species is easily distin- 

 guished from the preceding by its more slender form and 

 by the punctuation, which is about equally dense and strong 

 •on the elytra and pronotum. 



