NAUSIBIUS. 557 
2. Nausibius brevicornis, sp.n. (Tab. XVII. fig. 22.) 
Opacus, densissime, minus subtiliter punctatus, niger ; elytris, pedibus antennisque piceis ; prothorace lateribus 
obtuse subdentatis, elytris interstitiis subtiliter elevatis; antennis ab oculis distantibus, brevibus, 
articulo ultimo parvo. 
Long. 3 millim. 
Hab. GuatemaLa, San Gerénimo (Champion). 
Shorter than NV. clavicornis and readily distinguished by the very dense, coarse 
punctuation of the thorax. ‘The antenne are unusually short, stout, inserted near the 
front of the head, the terminal joint very much narrower than that preceding it. 
Thorax rather longer than broad, the base much produced in the middle, the sides 
undulating so as to form five or six extremely obtuse prominences; the punctuation 
coarse, extremely dense, the surface almost unimpressed. LElytra with the sculpture 
extremely dense and indefinite, as in WV. clavicornis ; the outer interstices very distinctly 
elevated. Legs short; hind femora thick. One specimen. 
This species agrees in many respects with the description of WV. repandus, Lec., but 
the punctuation appears to be quite different. 
3. Nausibius grouvellei, sp. n. 
Sat elongatus, haud depressus, subnitidus, niger; antennis pedibusque piceis ; elytris fusco-rufescentibus ; 
prothorace crebre subtiliter sed argute punctato, lateribus parum profunde crenulatis; elytris tantum 
interstitiis duobus intra-lateralibus subtiliter elevatis. 
Long. 3 millim. 
Hab. Panama, Bugaba (Champion). 
Similar in form to WV. brevicornis, but readily distinguished by the entirely different 
thoracic punctuation: this consists of fine but definite punctures placed on a shining 
surface. Antenne short and stout, the penultimate two joints very strongly transverse. 
Eyes moderate, placed at the posterior angles of the head, the antenne inserted 
halfway between them and the front of the epistome. Thorax elongate, crenulate at 
the sides, and with the front angles very distinctly prominent, the surface distinctly 
bi-impressed in front of the base. Elytra finely pubescent, seriately punctate, only the 
interstices on the deflexed sides distinctly elevated. Hind femora very thick. ‘Two 
specimens. 
4, Nausibius silvanoides, sp. n. (Tab. XVII. fig. 23.) 
Angustus, dorso deplanato; fuscus, elytris, antennis pedibusque sordide ferrugineis; capite prothoraceque 
densissime punctatis, opacis, hoc lateribus vix perspicue crenulatis ; elytris interstitiis haud elevatis. 
Long. 23 millim. . 
Hab. Guatemata, San Gerénimo (Champion). 
Eyes rather small; antenne inserted halfway between them and the front of the 
epistome, tenth joint a little broader than the preceding or the terminal joint. Thorax 
