556 STAPHYLINID ZA. 
LYPETICUS. 
Labrum anterius leviter tri-emarginatum, medio dentibus duobus robustis, perparum prominulis. Mandibule 
bidentate.  Tarsi posteriores graciles, evidenter quinque-articulati, articulo basali elongato, secundo 
bene longiore. Caput collo angusto. 
The structure of the labrum is rather peculiar: in the middle there is a broad 
shallow excision, and on either side of ita very short broad truncate tooth, and again on 
either side a very slight emargination. The head is quadrate, with a narrow neck, not, 
however, so extremely narrow as in Scoepeus. The prosternum is short, and the process 
above the cox extends on to the metasternum. The penultimate joint of the maxillary 
palpus is short, moderately broad, the terminal joint very minute and slender. The 
front tarsi are scarcely dilated. 
The genus is founded on Lithocharis munda, Sharp. When describing that species, 
I thought that it would form a distinct genus; and as I have now introduced the 
elongation of the prosternal process as an aid to the separation of these forms, 
L. munda cannot remain in Lithocharis, as it has the prosternal structure of the Medon 
type. The best position for the genus seems to be between Orus and Neomedon ; from 
the latter of these two genera it is distinguished by the very narrow neck, narrower 
even than in Orus. 
1. Lypeticus celatus. 
Fulvo-castaneus, nitidulus, antennis elytrisque testaceis, pedibus pallide testaceis; capite majore, subcordato, 
utrinque post oculos profunde strigoso ; prothorace subpentagonali, nitido, sublevigato; elytris sat crebre 
punctatis. 
Long. 23 millim. 
Hab. GuatemaLa, El Reposo 800 feet (Champion). 
This will be readily identified among our species by the peculiar sculpture of the 
head on either side behind the eyes. The head is deeply emarginate behind, with the 
hind angles much rounded, so that it is subcordate in form. The thorax is nearly as 
long as broad, with the sides a good deal narrowed behind, and the front margin rather 
strongly oblique on either side; the punctuation is quite absent along the middle, and 
on either side is obsolete and distant. The elytra are more distinctly punctate, the 
punctuation being definite and rather deep at the base, more obsolete behind. 
The unique example is in bad preservation, and is, I believe, a male; for though I 
have not been able to withdraw the retracted terminal segment, yet I think I can see 
that it bears a deep emargination of the ventral plate. The species is closely allied to 
the Amazonian L. mundus, but is rather more elongate, with more cordate head, longer 
and narrower thorax (whose punctuation is obsolete), &c. 
Sandy banks of streams (Champion). 
