STEREODERMUS. 9 
from Mexico may possibly be distinct from S. pygmaeus, which, however, appears to be 
the only Stereodermus at all common there. From Panama we have received only two 
examples. 
2. Stereodermus longiceps, sp. n. (Tab. I. figg. 6; 6a, front tibia.) 
Angustus, rufo-testaceus, nitidus; capite post oculos longiore; prothorace impunctato, late sulcato; elytris 
fortiter punctatis, interstitio tertio discreto, nitido. 
Long. 53-74 millim. 
Hab. Guatemana, Las Mercedes (Champion); Panama, Volcan de Chiriqui (Champion). 
Extremely similar to the more robust and shining varieties of S. pygmeus, but with 
the head rather longer behind the eyes. 
Channel of rostrum and head simple, the lateral ridges that limit it shining, not 
interrupted. ‘Thorax distinctly narrowed towards the front, very shining, with scarcely 
any trace of punctuation. Elytra with the sculpture very similar to that of 8. pygmaeus, 
but the row of punctures on the elevated fifth interstice larger, the third interstice 
more distinct and not in the least opaque. Front tibie very broad, the processes 
forming the notch large. Head opaque beneath. 
Four examples. The unique specimen from Las Mercedes is a variety of very small size. 
8. Stereodermus latirostris, sp. n. 
Robustus, sordide rufus, fere opacus, prothorace disco nitido; rostro carinulis ante-ocularibus opacis, crassi- 
usculis ; elytris parum discrete punctatis, interstitio tertio lato, opaco, quinto carinato, nitido. 
Long. 53-8 millim. 
Hab. Guatemaua, Teleman (Champion) ; Nicaragua, Chontales (Janson) ; Panama, 
Volcan de Chiriqui (Champion). 
Antenne long and thick. Rostrum broad; the insertion of the antenne rather far 
from the eyes, the space between the two dull, the channel not divided, rather fine 
on the posterior part. Vertex shining, not divided, sparingly punctate, the posterior 
angles prominent. Thorax deeply constricted near the front, the channel broad, the 
sides dull, sparingly setose, the disc shining, almost impunctate. Elytra rather 
broad, the sutural interstice shining, the others dull, except that the fifth, which forms 
the most elevated part of the elytron, is a little shining; punctures moderately large, 
but subobsolete; the carinula-like interstices on the apex much less distinct than usual. 
Front tibie very broad, their notch very large and deep. Under surface of the head 
dull to as far forwards as the insertion of the antenne. Ventral segments opaque. 
A series of about forty individuals was obtained of this species; most of them are 
from the Volcan de Chiriqui at low elevations. It varies but little. I think the sexes 
may be distinguished by the mucronation of the apices of the middle and hind tibie 
in the male. The very large and deep metasternal and abdominal depressions are as 
strongly marked in the female as they are in the male. 
BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 6, May 1895. CC 
