140 
Psyche 
[September 
Prothorax nearly trapezoidal, length along the median line 
about one-tenth greater than its width at middle; sides almost 
perfectly straight, only just perceptibly flaring at the hind angles, 
the- width across the tips of the latter two-fifths greater than the 
apical width; surface evenly convex with only the faintest trace 
of the antemedian impressions so conspicuous in lautus; punc- 
tuation fine and not dense, the punctures separated on the average 
by about their own diameters. 
Elytra slightly more than three times as long as wide, and 
one-fourth wider than the thorax across the tips of the hind 
angles; striae barely visibly impressed except toward the sides 
and apex, the intervals nearly flat and with fine punctures which 
are not much larger than those of the striae. 
Propleura finely not densely punctate, becoming smoother 
internally; metasternum and abdomen more closely punctate. 
Legs slender, tibiae straight, outer margin not sinuate. 
Length 17 mm.; width 4.2 mm. 
Described from a single male specimen taken at Olancha, 
Owens Valley, California, June 19, 1917 by G. R. Pilate. 
Smaller, a little narrower, and paler in color than lautus , 
the disparity between the lengths of the terminal joint of the 
antennae and of the branch of the preceding joint less marked, 
the prothorax more elongate with straighter sides and less diver- 
gent hind angles, much sparser punctuation, more obtuse lat- 
eral margins, and less impressed elytral striae. Furthermore in 
lautus the propleura are densely punctate and the middle tibiae 
(especially) are distinctly sinuate; not so in the present species. 
Horni agrees more nearly in size with pretiosus but the latter has 
a very much stouter thorax, the width across the tips of the 
strongly flaring hind angles subequal to the width of the elytra 
at base, and the punctuation much sparser. 
I am very much inclined to believe that the species here 
described is that figured by Horn (Trans. American Ent. Soc. 
vol. IX, PI. I, fig. 2) and alluded to by him in the accompanying- 
text as a possible variety of lautus. The relatively longer ter- 
minal antennal joint and non-sinuate middle tibiae as compared 
with the figure of lautus on the same plate are in agreement with 
