PHLGOTRIBUS.—CHRAMESUS. 169 
12. Phleotribus biguttatus, sp. n. 
Mas. Ovalis, convexus, piceus, elytris subluteo-ferrugineis, ad latera utrinque nigro-maculatis; prothorace 
amplo, semigloboso, punctato, apice tuberculis in lineis duabus, 4 anticis in margine prominulis exstructo ; 
elytris crenato-striatis, interstitiis subconvexis, rugis transversis setiferis munitis. 
Long. 2°3 millim. 
Male. Oval, convex, subnitid. Head black, rufescent over the mouth, finely punctured, front concave, 
bituberculate between the prominent lateral borders of the antennal pits; antenne ferruginous, the 
scape slender, strongly clubbed at the tip, fringed, the club blackish, with elongate lamelle. Prothorax 
ample, hemispherical, and widest at the base, which is bisinuate and not produced backwards; piceous- 
black with the hind margin lighter, subimpressed on either side behind the middle with shallow subrugose 
punctuation, and scattered erect hairs round the margins, with two concentric lines of tubercles towards 
the apex, the anterior line with four prominent tubercles on the margin, and with feeble granulation 
between the posterior line and the middle. Scutellum transverse, convex, piceous. Elytra one-third 
longer than the prothorax, and a little wider at the extreme base, the basal margins rounded, everted 
and crenate, the sides straight and subconvergent to the hinder third, thence rounded to the apex, and 
sharply bordered below; surface convex from the anterior third to the apex, ferruginous with a luteous 
tinge, and with the extreme margin and a large lateral spot connected with it about the middle of each side 
black, crenate-striate, the strie deep with confluent punctures, interstices subconvex with transverse 
elevated rugs: from base to apex, bearing short erect bristles. Underside black, legs ferruginous; tibie 
not strongly spined, the tarsi long and slender. 
Hab. Panama, Bugaba (Champion). 
This species is quite distinct from any other Phlewotribus, and is represented by a 
single male specimen. ‘The impressed head is scarcely visible from above, and this 
peculiarity, together with the prominent marginal tubercles of the prothorax, gives it 
a certain likeness to a Tomicid. 
CHRAMESUS. 
Chramesus, Leconte, Tr. Am. Ent. Soc. 1868, p. 166; Rhynch. N. Am. p. 375. 
Rhopalopleurus, Chapuis, Syn. Scol. p. 46 (Mém. Soc. Liége, 1873, p. 254). 
This genus is readily recognized by the structure of the antenne, which are inserted 
towards the front immediately before the middle of the eyes; they have a short five- 
jointed funiculus and a large flattened solid club which is attached to the funiculus by 
its superior margin. The antennal groove is almost absent. 
In appearance the species are small, short-oval, convex, and pilose or subsquamous. 
The genus was associated with Polygraphus by Leconte on account of its solid 
antennal club and the simple third tarsal joint. It seems, however, to be associated 
more naturally with Phlwotribus; I regard the insertion of the antenna as frontal 
rather than lateral, though the change of position is slight. The shape of the antennal 
club and its attachment to the shaft would be precisely paralleled by the antenna of 
Eulytocerus if the joints in the club of the latter insect had become fused and the 
sutures obsolete. 
The species of Chramesus are found in North, Central, and South America and the 
Antilles. Three are found in our region. 
BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 6, November 1897. YH / 
