672 BYRRHIDZ. 
4, Nosodendron chiriquense, sp. n. 
Ovale, nigerrimum, nitidum, pedibus piceis, antennis testaceis ; elytris seriebus punctorum ad basin prope 
suturam desinentibus. 
Long. 3 millim. 
Hab. Panama, Volcan de Chiriqui below 4000 feet, Bugaba (Champion). 
This species has no punctuation on the thorax, and this character, and the fact that 
the two inner series of punctures on the elytra are obliterated at the base, readily 
distinguish it from 1. championi, which it resembles extremely at first sight. The 
sculpture of the elytra has the peculiar “ cell-arrangement” at the tip, but not nearly 
so well developed as it is in N. championi. ‘The mentum has a large oblong 
impression on the middle divided into two parts by a strong carina. This character 
and the absence of the dense fine punctuation on the apical half of the elytra easily 
separate WV. chiriquense from N. subtile. Seventeen specimens. 
5. Nosodendron derasum, sp. n. 
Ovale, convexum, nigrum, nitidum, pedibus piceis, antennis rufis; elytris seriebus punctorum ad basin prope 
suturam desinentibus. 
1 
Long. 34 millim. 
Hab. Panama, Volcan de Chiriqui 3000 feet (Champion). 
This insect agrees with WV. subtle in the mentum having a transverse impression, or 
groove, near the front ; it differs from that species, however, in the fact that the apical 
portion of the elytra has a “cellular arrangement” of the sculpture, instead of a 
minute close punctuation. JV. derasum is much shorter in form than NV. mezicanum, 
and the surface is more polished than it is in NV. subtile. The punctures of the elytral 
series are not so large as in the allied species, and the punctuation of the metasternum 
is much reduced. The punctuation of the head is quite distinct, though fine, and 
there is a scanty fine punctuation at the sides of the thorax. One specimen. 
6. Nosodendron politum, sp. n. 
Late ovale, nigerrimum, nitidum, antennis piceo-testaccis; elytris seriebus punctorum ad basin prope suturam 
desinentibus, punctis remotis sed ad apicem discretis. 
Long. 37-4 millim. 
Hab. Panama, Volcan de Chiriqui 3000 to 4000 feet (Champion). 
The highly polished surface is in this species not diminished by any minute 
punctuation at the apex of the elytra. The clypeus is finely, but not densely 
punctured. ‘The thorax is highly polished, but there is a patch of definite punctures 
on each side. The elytral series of punctures are perfectly regular and distinct on the 
apical parts. Mentum with two longitudinal grooves converging in front, and with a 
third longitudinal groove along the middle. Seven specimens. 
