10 RHYNCHOPHORA. 
4. Stereodermus carinatus, sp. n. 
Gracilis, piceus, nitidus, prothorace parce subtiliter punctulato ; elytris intervallis fortiter carinato-elevatis, 
punctatura indiscreta. 
Long. 54-7 millim. 
Hab. Guatemaa, Zapote (Champion). 
Very similar superficially to the larger and darker examples of S. pygmeus, but 
readily distinguished by the strong carina-like interstices of the elytra and by the 
punctuation being indistinct on them. Antenne thick, broad. Channel on the rostrum 
elongate, its lateral boundaries between the eyes and the insertion of the antenne 
somewhat depressed and opaque: the groove continued to the vertex. Vertex with 
the angles rounded. ‘The thorax sparingly but distinctly punctate. Fifth, sixth, and 
seventh interstices of the elytra each elongate and carina-like. On the under surface 
the head is dull and similar in the arrangement of the sete and other respects to 
that of S. pygmeus. The tibie are not quite so broad as they are in S. pygmeus, 
and the notch and its processes are less pronounced. 
Seventeen specimens. 
Var. tenuis. 
Angustior, elytrorum punctatura haud adeo indiscreta. 
Long. vix 5 millim. 
Had. Panama, Volcan de Chiriqui (Champion). 
The var. tenwis is represented by a single specimen only ; in addition to the distinc- 
tion of punctuation it appears to me to have the tibial process of the front legs smaller, 
and the opaque space on the under surface of the head narrower. If this should be 
confirmed, it will probably prove to represent a distinct species. 
5. Stereodermus chontalensis, sp. n. 
Elongatus, angustus, rufo-piceus, nitidus ; antennis crassis, articulo ultimo elongato ; prothorace minus subtiliter 
punctato ; elytris fortiter punctatis, jintervallis minus carinato-elevatis. 
Long. 6-8 millim. 
Hab. Nicaragua, Chontales (Belt, Janson); Panama, Volcan de Chiriqui (Champion). 
This species, on account of the distinct punctuation of the thorax, is only likely to 
be confounded with S. puncticollis and S. carinatus; from the latter species S. chon- 
talensis is distinguishable by a glance at the less carinate interstices of the elytra, 
while from &. puncticollis it is also easily to be distinguished by the very distinct 
coarse punctures of the elytra, and by the broad front tibie furnished with a large 
notch. 
The last joint of the antenna is a little longer than usual. The head is rather short 
and broad; the hind angles are distinct; the sulcus is rather elongate, connected with 
the emargination on the vertex only by a fine channel, its lateral boundaries 
