MEONCERUS.—SOMATOXUS. 359 
sternum being bent upwards in a curve between them. The hind coxe are 
moderately distant. 
1. Meoncerus salvini, sp. n. (Tab. XI. fig. 19.) 
Suboblongus, parum convexus, piceo-ferrugineus, nitidus, antennarum clava nigra; elytris seriatim punctatis, 
interstitiis fere impunctatis. 
Long. 8 millim. 
Hab. GuatTeMata, Cerro Zunil (Champion). 
Head rather closely and coarsely punctured. Thorax smooth and shining, much 
narrowed in front, strongly margined at the sides, very broad, the base not lobed in 
the middle but feebly bisinuate, subobsoletely and not closely punctate. Scutellum 
rather large, impunctate. Elytra elongate, with regular series of punctures, and 
with a sutural stria which is deep behind and there very close to the suture, but 
diverges somewhat anteriorly and is continued to the scutellum as a series of punctures. 
Legs slender. Prosternal process a little depressed before the extremity, strongly 
acuminate. 
Seven specimens. The colour varies from ferruginous to piceous-black. I cannot 
detect any sexual distinctions. 
2. Meoncerus seriatus, sp. n. 
Oblongo-ovalis, subconvexus, piceus, nitidus, antennis basi pedibusque sordide rufis, illarum clava nigra; pro- 
thorace obsolete punctato ; elytris seriatim fortiter punctatis, interstitiis impunctatis. 
Long. 5-6 millim. 
Hab. Panama, Volcan de Chiriqui (Champion). 
This insect is, on the upper surface, very similar to JZ. salvini, though it is a good 
deal smaller, and has the thorax more obsoletely punctured, and the serial punctures 
on the elytra larger. On the under surface the prosternal process is narrower, more 
parallel, and but little pointed behind and not impressed before the apex, while the 
front of the metasternum is but little prominent and not emarginate for the reception 
of the prosternal process. 
Five specimens. I am unable to find any external sexual distinctions. Like 
M. salvini, the species varies in depth of colour. I have the male before me, and 
it has a very large supplementary segment, which, however, is quite internal in the 
normal state. 
SOMATOXUS, gen. nov. 
Corpus elongatum, subdepressum. Elytris acuminatis. Tarsi omnes lineares, anteriores haud vel vix dilatati. 
The peculiar form and the slender tarsi of the insects for which I establish this 
genus give them an appearance foreign to the Nitidulide; but in all other respects 
they are, so far as I can see, quite of ordinary Nitidulid character. 
