216 RHYNCHOPHORA. 
6. Prionomerus bigibbosus. 
Prionomerus bigibbosus, Boh. in Schénh. Gen. Cure. vil. 2, p. 243°. 
Hab. Mexico (coll. Chevrolat '). 
A species not represented in our collection, and easily recognizable by the very large 
tubercle between the third and fourth elytral strie before the middle. The type (with 
that of P. mucidus) has been communicated by Dr. Sjéstedt, of the Stockholm Museum, 
7. Prionomerus abdominalis. (Tab. XII. figg. 12, 12a.) 
Prionomerus abdominalis, Boh. in Schénh. Gen. Cure. vii. 2, p. 249°. 
Prionomerus scutellaris, Chevyr. in litt.*. 
Broad, robust, black, the abdomen, the intermediate and hind legs entirely, and the anterior tarsi, testaceous, 
the anterior margin of the pronotum and the anterior femora at the apex beneath rafous, the antenne 
rufo-testaceous, with the two basal joints of the club infuscate; the upper surface mottled with patches 
of white pubescence, which is rather long on the prothorax, the scutellum with white pubescence, the 
sutural elevation of the elytra clothed with fulvous heirs, the anterior legs and under surface with 
whitish hairs. Head almost smooth; eyes large and prominent; rostrum short and stout, shining, 
punctate at the base, smooth at the tip; antenne short, the club longer than the funiculus, with deep 
sutures. Prothorax a little broader than long, subconical, constricted before the apex and slightly sinuate 
at the sides behind, the disc with two large tubercles before the middle, the surface closely punctate. 
Elytra broad, quadrate, transversely gibbous just below the base, the humeri swollen and laterally ~ 
prominent, rounded externally, and subtruncate in front, the apices separately rounded ; deeply punctate- 
striate, the interstices rather convex and finely punctate, 1 with a large, flattened, subconical prominence 
before the middle, 4 with an oblong prominence below the base, and 5 with one at the middle, and 6 also 
conspicuously raised at its point of termination. Legs short. 
Length 24-3, breadth 1,%,-2) millim. 
Hab. Panama, Volcan de Chiriqui 3000 feet (Champion).—CotomBia (Mus. Brit.) ; 
Braziu'. 
Two specimens, differing from the others I have seen from South America in their 
smaller size and more slender intermediate and hind legs. Easily distinguishable by 
its prominent eyes, bituberculate prothorax, quadrate, nodose elytra, and mottled 
pubescence. The antennal club is distinctly longer than the funiculus. The elytral 
strize 1-3 are strongly sinuous before the middle, being pushed out of position by the 
large sutural elevations. Compared with P. flavicornis (Fabr.), Boh., the elytra are 
more quadrate in shape and have more numerous elevations on the disc. 
8. Prionomerus trigonus, sp. n. (Tab. XII. figg. 13, 13a.) 
Subtriangular, robust, opaque, black, the intermediate and hind legs entirely, and the anterior tarsi, testaceous, 
the antenne rufo-testaceous, with the two basal joints of the club piceous; the elytra sparscly and 
extremely finely pubescent, the punctures of the strie each with a minute silvery hair-like scale, the 
rest of the surface and the legs with rather long greyish or white pubescence. Head almost smooth, the 
eyes very large and prominent; rostrum curved, very stout, shorter than the prothorax, shining, rugosely 
punctured at the base, sparsely punctate thence to the tip, the antenn inserted before the middle; the 
latter with the club slightly longer than the funiculus. Prothorax subconical, a little broader than long, 
strongly constricted before the apex, closely, finely punctate. Elytra broad, subquadrate, acutely, 
