434 STAPHYLINID. 
series of punctures extending transversely across the front part ; elsewhere with only a 
few rather fine punctures, about five to seven on each side. Antenne inserted on the 
front of the clypeus, rather short and stout, thicker externally, with joints 6-10 
transverse. Scutellum densely and rather finely punctate. Elytra shining, sparsely and 
rather finely punctate. Hind body rather slender, moderately closely punctate. 
This is one of a group of species, of which it may serve as the type, of depressed 
form, and with the punctures on the head peculiar, there being more than usual on the 
front part, and less than usual near the hind angles; the hind femora are armed with 
only a few short distant spines, and the front femora unarmed, the sexes agreeing in 
these respects. 
B. dejectus is one of the commoner Staphylinide of our region, and varies somewhat 
in size, in the colour of the wing-cases, and in the prolongation of the hind trochanters 
of the male; this last is very slight indeed in the smaller of the Mexican and Guatemalan 
examples, but becomes very remarkable in the large examples from the Volcan de 
Chiriqui. I have received the species from M. Fauvel, with the MS. name of 
Belonuchus biarti. 
The figure represents a female example from the Volcan de Chiriqui. 
14. Belonuchus stenoderus. 
Depressus, gracilis, omnium nigerrimus, nitidus; mandibulis, palpis antennarumque basi piceis; prothorace 
gracili, posterius fortiter angustato, seriebus discoidalibus subtiliter 5-punctatis; elytris abdomineque 
parce punctatis, hoc segmentis 2°—4™ basi transversim depressis et crenato-punctatis. 
Long. 5-6 millim. 
Hab. Panama, Bugaba (Champion). 
Antenne short, thickened externally; the two basal and the apical joints slightly 
paler than the rest. Head large and broad, quadrate, with the hind angles rounded. 
Elytra much broader, but not longer, than the thorax. Hind body slender, shining 
black, somewhat coarsely punctate. 
This is smaller and more slender than B. dejectus, and is readily distinguished by the 
black elytra, not longer than the thorax. The male has a small notch at the extremity 
of the last ventral plate. 
_ Four examples have been found. 
15. Belonuchus panamensis. 
Depressus, nigerrimus, nitidus ; prothorace posterius fortiter angustato, seriebus discoidalibus sepius 4-punctatis 
abdomine elytrisque dense punctatis. 
Long. 9 millim. 
Hab. Nicaragua, Chontales (Janson); Panama, Volcan de Chiriqui, Bugaba, Tolé 
(Champion). 
This is closely allied to B. dejectus, but is readily distinguished by numerous details. 
