328 
(JI-;0. II. HORN, M. I). 
extending from base ne-irly to apc.x, lateral oblique depre.ssiotis moderately well 
marked, surface closely transversely stri};ose, becoming oblique and longitudinal 
toward the sides : scuteliiim transversely carinate ; elytra feebly sinuate behind 
the humeri, the apices rounded, serrulate; disc slightly flattened, but not snlcate, 
basal depressions feeble, surface closely granulate-imbricate, somewhat strigose 
at sides in front, each elytron with three faint pubescent spots, one at base, one 
in front of middle, the posterior one-third from apex; body beneath more shin- 
ing than above ; prosternal lobe obtusely rounded, iiitercoxal process rather wide, 
parallel, trinicate at apex, propleurie closely strigose punctate; metasternum at 
sides coarsely transversely strigose. Abdomen moderately closely punctate, 
more or less strigose over the whole surface, but more coarsely at the sides of the 
first two segments; jiygidium indistinctly punctate, feebly carinate; claws 
broadly toothed. Length .27 — .29 inch. ; 7 — 7.5 mm. 
Male. — Front more closely punctate, but rather less concave. 
'riiora.N with a feebler median impression without impressed line. 
Prosternum densely punctured, sparsely pubescent, the pubescence 
extending on the metasternum, which is flattened and closely punc- 
tate ; first two ventral segments vaguely sulcate their entire length 
and pubescent in the depression ; tibiie simple. 
Female. — Head less closely punctate, the concavity a little more 
jironounced ; median depression of thorax well marked with a fine 
impressed line at bottom. Prosternum less densely punctate, scarcely 
pubescent. Metasternum slightly convex ; ventral segments not 
impressed. 
Variations. — In the two specimens before me the variations have 
been alluded to, and seem to be sexual. 
'fhe pubescent spots of the elytra are not distinct in either speci- 
men, except at base of elytra, but are very plainly indicated by the 
denser and finer punctuation. Closely resembles Jinridanus, but in 
the latter the ])ygidium is not carinate, and there is scarcely a trace 
of median impression of the thorax. 
Hub. — Arkansas and Nebraska. 
\. Iloritlaiiii!^ Crotch. — Moderately robust, subcylindrical, slightly de- 
pressed above, bright cupreo-ieneous, each elytron with three pubescent spots. 
-\ntennte attaining the middle of the thorax, piceons, serrate from the fifth joint ; 
head slightly concave with a fine median impressed line, surface closely punctate- 
strigose. Thorax one-fourth wdder than long, slightly narrowed at base, sides 
feebly arcuate, slightly sinuate near the posterior angles, which are rectangular, 
and with an obtuse, straight carina, margin sinuous; disc convex, a flattening 
or slight depression in front of the .scutellum, lateral oblique impressions well 
marked, surface transversely punctate-strigose, but not roughly ; scutellum trans- 
versely carinate; elytra scarcely sinuate at the sides, the apices rounded and 
serrulate; disc somewhat flattened, basal depressions feeble, surface closely and 
rather finely granulate-imbricate, on each elytron three faint pubescent spots 
