478 
RHYNCHOPHORA. 
OLIGOBARIS, gen. nov. 
Mandibles long, notched within, decussate at the tip, oblique on their outer edge; rostrum long, stout, 
arcuate, separated from the head by a transverse sulcus; antenne (fig. 34 a*) with a stout, oblong-ovate, 
acuminate, densely pubescent club, which is about as long as the funiculus, the latter with joints 2-7 
widening outwards and strongly transverse ; eyes very large ; prothorax broad, subtubulate in front, deeply 
pisinuate at the base, the median lobe rounded, impinging on the scutellum, and margined behind, the 
exposed portion of the latter arcuate and strongly transverse ; elytra suboval ; pygidium very large, 
convex, vertical, truncating the fifth ventral segment beneath; prosternum completely unimpressed 
behind the transverse subapical groove; anterior coxe separated by about their own width ; legs rather 
elongate; femora feebly clavate, sulcate, unarmed; tibie almost straight, with a slender apical uncus ; 
tarsi with the third joint narrowly bilobed, the claws long and divergent; body oblong-ovate, densely 
squamose beneath, setulose above. 
Type, O. breviseutum. 
This genus includes a single small species from Panama. Its essential characters 
are:—the unimpressed prosternum, the incompletely exposed, broad, arcuate scutellum, 
the 
the 
stout, elongate antennal club, the comparatively long, apically decussate mandibles, 
very large, convex pygidium, and the long, divergent tarsal claws. Oligobaris has 
more the facies of a Centrinid than of a true Barid. 
1. Oligobaris breviscutum, sp. n. (Tab. XXII. figg. 34, 34a, b, ¢.) 
Rather convex, shining, the tarsi and antenne ferruginous or fusco-ferruginous ; the sides of the prothorax 
-and the elytra clothed with very small, white, setiform, adpressed scales, those on the elytra arranged in 
a single close series down each interstice, the series becoming doubled or trebled towards the base of 2-4 ; 
the under surface densely clothed with larger, oblong, white scales. Head densely, finely punctate ; 
rostrum fully as long as the head and prothorax, densely punctured, the antenus inserted at a little 
below the middle. Prothorax strongly transverse, rounded at the sides anteriorly, strongly constricted 
in front; closely punctate, except along the smooth median line. LElytra very little wider than the 
prothorax, gradually narrowing from the base, depressed along the suture ; finely and shallowly punctate- 
striate, the interstices broad, flat, closely, transversely rugose and feebly seriate-punctate. Beneath 
densely punctate. 
Length 22, breadth 1;4;-1} millim. (¢.) 
Hab, Paxama, David in Chiriqui (Champion). 
Two specimens, evidently males. ‘The vestiture of the under surface in this insect 
is denser and coarser beneath, as in many Centrinids. 
* Numbered 34 6 at the bottom of the Plate. 
