ONTHOSTYGNUS.—MISANTLIUS. 393 
Basal joint of the antenne elongate, equal to the three following together ; joints four 
to ten stout, five to ten each shorter than broad ; terminal joint ferruginous. Head 
densely and not finely punctate. Thorax rather slender, a good deal narrower than the 
elytra, rather closely punctate, but with a broad space along the middle impunctate. 
Elytra rather closely and finely punctate, with a band of ashy pubescence at the base 
and another at the extremity. Hind body slender, rather closely and coarsely 
punctate. ; 
This species was discovered by Mr. Flohr in the flowers of Bromelie. The sexual 
differences are apparently but slight; the individual figured is, I believe, a male. 
Owing to the tarsi being represented edgewise they do not appear so broad in the 
figure as they really are. 
2. Onthostygnus pollens. 
Niger ; abdomine apice testaceo; capite majore. 
Long. 25 millim. (mandibulis clausis). 
Hab. Muxtco, Jalapa (Flohr). 
Though closely allied to O. fasciatus this fine insect is certainly another species. 
The pubescence of the elytra is black and quite unicolorous; the hind part of the 
terminal segment is yellow, as are also the terminal styles, which are not tipped with 
black. The pubescence of the hind body is more abundant, and the punctuation on the 
apical part of each of its segments is more obsolete. 
The unique example is no doubt a male, as it has a minute emargination of the apical 
ventral plate. 
MISANTLIUS. 
Corpus gracile, densissime punctatum, opacum. Antennz tarsique elongati, graciles. Palpi elongati graciles ; 
labiales articulo intermedio valde elongato, quam basalis sexies, quam ultimus duplo, longiore. Cox 
intermediz approximate, mesosternum inter eas transversim ecarinatum. — 
This is a very distinct genus, with some affinity to Philonthus, but without any close 
ally ; it will be readily recognized by the peculiar proportions of the joints of the labial 
palpi, their middle joint being remarkably elongate, while the basal joint is diminished. 
The side-piece of the prothorax is small, but extends from the base; it is little inflexed 
and its lower marginal line approaches the upper line at the front coxz, so as to touch 
_it, but does not disappear, but runs forward quite close to the upper line till near the 
front of the prosternum. The genus shares with Onthostygnus a peculiarity in the form 
of the middle trochanters, these not being acuminate at the extremity, but broad and 
subtruncate. The ligula is small and not emarginate. There is an obscure longitu- 
dinal carinulation of the middle of the mesosternum behind, which, however, is scarcely 
marked enough for a generic character. I am not acquainted with any species other 
BIOL. CENTR.-AMER., Coleopt., Vol. I. Pt. 2, January 1889. 3 HE 
