1928] 
New Plastoceridoe and a New Cebrio 
141 
the present species, though here the sides of the thorax are 
straighter and hind angles less divergent than in the figure. 
Notwithstanding Horn’s statement that in lautus the thorax 
is “always longer than wide at middle” it is not so in any of 
my dozen specimens, nor is it true of either of the two examples 
in the LeConte collection, in both of which the length at middle 
is approximately one-seventh less than the median width. 
Euthysanius imparoculatus n. sp. 
Smaller than the other known species of the genus; rufo- 
testaceous, beneath a little paler, thorax moderately shining, 
elytra duller. Terminal antennal joint very distinctly shorter 
than the branch of the preceding. Head coarsely densely punc- 
tate; [eyes much less convex and less prominent than usual, 
separated across the front by four times their own width. 
Prothorax subcampanulate, very nearly as long as the width 
across the middle; sides rounded in front, straight and parallel 
in the middle third, the hind angles strongly divergent; surface 
rather finely not closely punctate, the punctures separated by 
from one to two times their own diameters. 
Elytra at base slightly wider than the distance across the 
base angles of the thorax; sides parallel in basal two-thirds; 
strise feebly impressed, punctuation about as usual. Propleura 
sparsely finely punctate, polished. Tibise not sinuate. 
Length 15.5 mm.; width 4 mm. 
White Mts., Gila Co., Arizona, July 1-15, 1925 (Poling). A 
single male. 
This is a very distinct species, separable at once from all 
others known by its coarsely punctate head and non-prominent 
eyes. In the present species and also in lautus the scutellum is 
minutely notched at tip; there is scarcely a trace of this notch 
in either pretiosus or horni. 
Aplastus scabripennis n. sp. 
Elongate, parallel, brown, head and elytra dull, thorax 
shining, pubescence grayish moderately conspicuous. 
