408 RHYNCHOPHORA. 
confluently punctate, and with indications of a raised median line, the extremely narrow interspaces 
oblique or sinuous. Elytra finely punctate-striate, the dorsal strie slightly sinuate, the interstices flat, 
rugulose and finely granulate, 8, 5, 7, and 9 wider than the rest. Pygidium rather large, densely 
punctate. Beneath coarsely, closely punctate. Prosternum with a broad, parallel-sided, shallow, 
bare sulcus. Anterior coxe separated by a little more than their own width, the intervening space 
flat and very coarsely punctured. Femora feebly serrate along the edges of the shallow sulcus beneath. 
Anterior tibia sinuate, the others almost straight. Tarsal claws small, narrowly separated. 
Length 4, breadth 1,%, millim. (9?) 
Hab. Panama, Volcan de Chiriqui 3000 feet (Champion). 
One specimen. Larger and more robust than RB. horrida, the head larger, squamose, 
and without transverse groove between the eyes, the vestiture entirely decumbent, the 
elytral sculpture very different, the pygidium larger, the tarsal claws more approximate, 
the prosternal excavation and tibie dissimilarly formed, the femora feebly serrate and 
shallowly sulcate beneath. 
LEPIDOBARIS, gen. nov. 
Mandibles strongly decussate ; rostrum abruptly separated from the head, arcuate, moderately long, stout, the 
apical portion parallel-sided and slightly wider than the basal portion, the scrobes rapidly descending, 
the antenne inserted at about the middle, the antennal club stout and ovate; prothorax narrow, often 
gibbous as seen in profile, transverse, deeply bisinuate at the base, constricted in front, the anterior 
margin sinuate laterally ; scutellum free, transverse, concave, small; elytra much wider than the pro- 
thorax, long, parallel-sided, separately rounded at the base and apex, often uneven or with prominent 
subapical callosities; pygidium exposed, vertical, large, transverse; prosternum more or less sulcate 
from the apex to as far as the middle of the coxe (indistinctly so in L. bifasctculata and L. nitidipennis), 
the basal process narrowing forwards, short, and not prominent; anterior coxe exserted, narrowly 
separated ; mesosternum depressed, the upper portion of the epimera visible from above; ventral 
segments 1 and 2 connate at the middle, 5 with a small truncated prominence at the apex in the ¢; 
femora unarmed, sublinear ; tarsal claws long, narrowly separated ; body elongate or oblong, more or less 
squamose, the scales often clustered into crests or fascicles on the prothorax or elytra. 
Type, L. acnasta. 
Five species are referred to this genus, the type being a common insect in Costa 
Rica, L. bifasciculata and L. nitidipennis differing from the rest in having a very 
shallow prosternal sulcus. Lepidobaris is perhaps nearest related to Trichobaris and 
Stictobaris, though their respective representatives are very different in appearance. 
L. acnisti and L. opacipennis have prominent, tuberculiform, subapical callosities, and 
the black vestiture of the prothorax and elytra clustered into patches or fascicles, 
much as in Ambates solani and its allies. Methyorrhina, Pasc., from Brazil, is also 
an allied genus. 
a. Elytra partly or entirely opaque, with prominent, tuberculiform, subapical 
callosities. 
a'. Prothorax and elytra with velvety-black patches on the disc, in addition to 
the other vestiture. 
a’. The black scales on the prothorax condensed into two sinuous lines . . aenisti. 
6°. The black scales on the prothorax condensed into two triangular patches. opacipennis. 
