1974] 
Moore — New Species of Opithes 
355 
segments bright ferrugineus with the head slightly darker. Elytra 
deep black with the humeri and base piceus and the apices narrowly 
flavate. Apical two-thirds of fifth tergite black. Antennae and mouth 
parts ferrugineus. Legs pale flavate with the apices of the femora 
and the bases of the tibiae piceus, tarsi ferrugineus. Beneath largely 
ferrugineus with the mesasternum and metasternum piceus, apical 
half of fifth and most of sixth sternites black, the narrow apex of the 
latter flavate. 
Head. — Head three-fifths as wide as long, widest across the eyes, 
the posterior margins of which are a little less than half the distance 
from the apex to the base; subparallel in anterior half, thence, 
rapidly narrowed to a cylindrical neck which is about one-fifth the 
length and one-fourth the width of the head. Anterior margin of 
head straight. Supra-antennal ridge prominent. Eye prominent, one- 
fifth the length of head. Antenna three-fifths longer than head, 
densely pubescent from the third segment, first segment as long as 
next six together, second segment twice as long as wide, narrower 
than apex of first, third through fifth segments each about two and 
one-half times as long as wide, about as wide as second, sixth through 
tenth segments each slightly shorter and just perceptibly wider than 
the preceding so that the tenth is only about one-fifth longer than 
wide, eleventh about as long as wide, pointed in apical third. Upper 
surface of head shining, with barely perceptible reticulate ground 
sculpture, finely, evenly, sparsely punctured throughout with a fine 
short pubescence interspersed with less numerous longer setae; at the 
base of each antennal ridge with a prominent fovea between which 
is a slight cntral impression, otherwise evenly convex. Each side of 
head behind the eyes with two large umbilicate punctures, the first 
on the upper surface one-third of the length of the eye from it, the 
other on the lower surface about the length of the eye from it. 
Under surface of the head impunctate except for about two dozen 
scattered fine punctures bearing fine long setae. Gular sutures widely 
separated in front, rapidly converging and thence very narrowly but 
distinctly separate to the neck where they diverge slightly. Maxil- 
lary palpus four-segmented, the first segment short, second long and 
slender, slightly arcuate, widest at apex, third slightly longer than 
second, hardly wider, widest at apex, almost straight, fourth segment 
semi-membranous, almost as wide at base as apex of third, almost as 
long as wide, conical with apex rather abruptly acuminate and mem- 
branous. Labial palpus three-segmented, first segment about twice 
as long as wide, second segment about as wide but half again as long 
as first, third segment about as long as first, acicular. Mandibles 
