STEREODERMUS. 11 
shining ; the front part of the rostrum is broad. The thorax is deeply constricted 
near the front, shining, with rather numerous somewhat coarse punctures. Elytra 
narrow ; the second interstice somewhat longer than usual, the fourth distinct though 
crenate, the fifth carinate; the punctuation of the external part very coarse and 
distinct. Legs thick; front tibie very broad, with large notch. Underside of head 
shining on each side, with a broad dull space on the middle; this space is scarcely 
sulcate, but is continued forwards as far as the front of the pterygia, which are very 
distinct, being highly polished. 
We have received four specimens of this species from Chontales, none of them being 
in perfect condition; from Chiriqui we have received a single example, it is of 
considerably larger size than those from Chontales. 
6. Stereodermus breviceps, sp. n. 
Parvus, angustus, rufus, nitidus ; capite brevi, oculis prominulis ; thorace minus subtiliter punctato ; elytris 
intervallis angustis, secundo integro, quinto subcarinato, striis profundis. 
Long. 43-5 millim. 
fab. GuatTemMaLA, Panima in Vera Paz, Cerro Zunil (Champion). 
Like the smallest and narrowest examples of S. pygmaeus. Club of antenne not 
very definite, its first two joints bead-like. Head short and broad, with the antenne 
inserted a little nearer to the eyes than in the other species of the genus, and the vertex 
divided by an unusually broad groove; the sides of the rostral groove indefinite behind 
the insertion of the antenne, and the two carinule over the point of insertion almost 
contiguous, so that the posterior part of the groove (placed on the vertex) is continuous 
only in a somewhat indefinite manner with the anterior part. Thorax much narrowed 
in front, distinctly punctulate, the transverse depression distinct only at the sides. 
Elytra very narrow, the second interstice visible throughout, though fine and much 
depressed in the middle; all the other intervals very narrow, crenate, owing to the 
confluence of the punctures in the grooves. Front tibie short, with shallow emar- 
gination. Under surface of the head broadly opaque in the middle, but with the 
shining area near each eye larger than in S. pygmaeus; the setosity of the pterygia 
only slight, fine and scanty. 
This distinct little species is only likely to be mistaken for 8. pygmeus, from which, 
however, it is very distinct by numerous characters, one of the most easily appreciated 
of which is the feeble tibial excision. 
Five specimens. 
7. Stereodermus dentipennis, sp. n. (Tab. I. figg. 7; 7a, bases of the elytra 
and prothorax.) 
Robustus, rufus, elytris ad suturam nigricantibus, antennis piceis; prothorace parce minus subtiliter punctato ; 
capite lato, oculis magnis, sulco mediano parum profundo, lateribus latis, opacis. 
Long. 74-8 millim. 
CC 2 
