232 RHYNCHOPHORA. 
and Gnathotrichus satisfactorily, the species of the two genera are quite distinct in 
facies; and, as before mentioned (anted, p. 184), the genera are widely, and perhaps 
properly, separated from each other by Eichhoff. 
STYPHLOSOMA, gen. nov. 
Funiculus antennarum 5-articulatus; clava acuminato-ovalis, compressa, 3-articulata, articulo 2° magno, 
suturis 1* et 2° valde curvatis. Prothorax postice subparallelus, dense granulatus ; prosternum processu 
angusto. Tibize lineares, antice oblique truncate; tarsi breves, articulis 1-3 equalibus. Corpus breviter 
cylindricum. Elytris dense punctato-rugosis. 
Head retracted. Antennal scape short; funiculus 5-jointed, scarcely wider apically ; club acuminate-oval, 
compressed, triarticulate, the sutures alone shortly pubescent, the first joint forming the basal third and 
separated by a curved suture from the second joint, which is very large and embraces the third, except 
its extreme margins. Prothorax short, cylindrical, in front rounded and rather strongly declivous, without 
elevated side or basal margins, entirely granulate ; prosternum short, with a narrow intercoxal process. 
Elytra cylindrical. Tibi narrow, feebly toothed, the anterior pair obliquely truncate at apex; tarsi 
short. 
This genus is established for a single species, which has somewhat the appearance 
of a Hypothenemus, but differs in the structure of the antennal club, the more 
cylindrical prothorax and elytra, and the sculpture. Founded on a unique example, it 
is placed provisionally between the Cryphali and Pityophthorus. 
1. Styphlosoma granulatum, sp.n. (Tab. VII. fig. 24, antenna.) 
Oblongum, cylindricum, subopacum, niger, antennis et pedibus testaceis; prothorace subquadrato, apice 
rotundato, dorso medio vix elevato, per totum dense granulato; elytris punctato-striatis, interstitiis 
angustis, dense rugose punctatis et squamulis uniseriatim ornatis, apice fortiter declivi, preter suturam 
impresso, interstitio 2° haud squamulato. 
Long. 1°7 millim. 
Oblong, cylindrical, rather dull, black, the antenne and legs testaceous. Head finely reticulate, the front 
subconvex, glabrous, closely and rugosely punctate, with a transverse carina below the middle; mouth 
rufescent, fringed; eyes oval, emarginate. Prothorax as long as broad, nearly parallel-sided from the 
base to the anterior third, obtusely rounded in front, the hind angles rectangular, the base truncate ; 
surface convexly declivous in front, cylindrical behind, transversely but indistinctly elevated in the middle, 
closely granulate, the granules a little coarser over the apical portion; pubescence scanty, extremely 
short. Scutellum small, rounded, punctured. Elytra as wide as the prothorax and one-half longer, 
truncate at base, the humeral angles rectangular, the sides parallel, slightly narrowed towards the 
obtusely rounded apex ; surface cylindrical to behind the middle, thence convex and strongly declivous, 
very closely and rugosely punctured, the striz somewhat impressed, the interstices narrow, flat, set with 
single series of small whitish scales, the series separated from each other by two rows of small, pale, 
decumbent sete, somewhat irregular towards the apex; declivity nearly vertical below, impressed at the 
apex of the suture as far as the 3rd interstice, extremity of the 2nd interstice without scales, Underside 
black, rather strongly punctured. 
Hab. Panama, Bugaba (Champion). 
One example. 
