1928] 
New Plastoceridoe and a New Cebrio 
143 
carinate; front margin briefly sinuato-truncate at middle, thence 
straight and oblique to the front angles; disk finely sparsely 
punctate, median line obsoletely impressed; sides finely mar- 
gined. 
Elytra three and one-half times as long as wide, very slightly 
attenuate posteriorly, finely striate, intervals finely not densely 
punctate and shining. 
Prosternum longitudinally obtusely carinate in posterior 
half. Last ventral segment barely visibly sinuate each side of a 
narrow apical truncation; legs slender, tarsi slightly longer than 
the tibiae. 
Length 15.5 mm.; width 3.5 mm. 
California (Monache Meadows, Tulare Co., 8000-8300 ft., 
July 15-18, 1913); a single male collected by G. R. Pilate. 
Allied to optatus by the margined sides of the prothorax but 
more slender, with longer 3rd antennal joint, and with the pro- 
thorax distinctly longer than wide. The dark color of the head 
and thorax may or may not prove constant and the same may be 
said of the prosternal carination. 
Aplastus productus n. sp. 
Moderately elongate, distinctly attenuate posteriorly, brown- 
ish ferruginous, moderately shining, finely pubescent. 
Head closely rather coarsely punctate; antennae moderately 
strongly serrate, 8th joint reaching the hind angle of the thorax, 
2nd and 3rd joints very nearly equal, each wider than long, to- 
gether about two-thirds as long as the 4th. 
Prothorax about nine-tenths as long on the median line as 
the median width, sides nearly straight and moderately diver- 
gent, the hind angles relatively short and only slightly more 
diverging than the sides; punctuation fine, nearly evenly dis- 
persed, the punctures separated by about twice their diameters 
as a rule; disk rather strongly evenly convex, sides finely mar- 
gined. 
Elytra not quite three times as long as wide, distinctly at- 
tenuate from the humeri, sides nearly straight as far as the apical 
