96 BULLETIN BROOKLYN ENTOM. SOC. VOL. VII. November 1884. ] | 
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velvety pubescence which covers the thorax and elytra. The latter are 
described by Dr. Leconte as being ‘‘sometimes piceo-ferruginous at base” 
but in specimens under examination are ofa uniform reddish brown, 
Length .50 to .80 inches, = 123 to 20mm. Habitat, Vanc., Cal., 
Montana. 
T, cinnamopterum, Kirby. Fn. Bor. Am. IV, p. 174, t.5, f. 8. Lec. LAP. 
ser, 2. II, 1850. p. 35. 
In this species the disk of thorax is more shining, smoother and less 
broadly rounded at sides; and the pubescence is less marked. The 
elytra are dark slatey brown in color, varying to reddish brown and bear | 
two more or less marked cost, Length .50 inch. =12.5mm _ Hab. 
Nee lasina's abundant Lake Superior. 
OPSIMUS, Mann, 
This genus contains one species which with Dzcentrus constitutes 
the group Opsimz distinguished from all other groups by having the 
thickened hind margin of the prothorax broadly emarginate in the arc 
of a circle and the emargination filled with a thin corneous plate. The © 
species is 
0. quadrilineatus, Mann. Bull. Mosc. 1843, II, p. 305; Esch. Dej. Cat. af ed. 
p- 354; Lec. Ent. Rep. 1857, p. 60, t. 2, f. Io. 
It is a dead-colored, finely pubescent insect, having the prothorax 
armed with a lateral acute spine, and the disk of the elytra with several 
vague impressions. The palpi are unequal in length and the legs stout 
with strongly clavate thighs and the 1st joint of hind tarsi longer than 
the two following united. Length .31 to .35 inch. = 8—g mm. Hab, 
Alaska, Or. 
DICENTRUS, Le. 
In this genus the thighs are not clavate and the prothorax is armed 
at sides with an acute spine at base in addition to the lateral spines. The 
species is fast 
D. Bluethneri, Lec. Trans. Am. Ent. Soc. VIII, p. 195. 
The color of this species is piceous, and the elytra have each two 
large brown spots. Length .12 to.22 inch. =3to5.5 mm. Habitat, 
California. La 
SMODICUM, Le, 
It seems useless to repeat all the group characteristics of this genus. 
They are fully stated in the ‘‘Classification’. The single species is easily 
recognized by its narrow, depressed form and shining, pale yellow 
color. Length .3 inch. = 7.5 mm. Hab. Atlantic States ee Texas. 
