408 STAPHYLINIDA. 
faint brassy tinge. lytra sparingly but deeply and very distinctly punctate. Hind 
body very black, very finely punctate. 
The male has apparently no external sexual marks, except that the head is larger; 
the front tarsi being quite simple, and the terminal ventral plate quite without emar- 
gination. I have certainly, however, this sex before me, as from one example I have 
extracted the large and peculiar cedeagus. 
31. Philonthus mollis. (Tab. X. fig. 15.) 
Subdepressus, nitidus, fuscus ; prothorace rufescente, antennarum basi pedibusque flavis ; abdominis segmentorum 
marginibus late testaceis ; capite subquadrato. 
Long. 7 millim. 
Hab. Panama, San Feliz (Champion). 
Antenne rather short, the penultimate joints each not quite so long as broad, the 
basal two or three and the apical one pale, the intermediate joints being dark. Head 
piceous, very shining. Thorax straight at the sides, very shining, reddish yellow. 
Elytra scarcely so long as the thorax, shining, sparingly punctate. Hind body finely 
and not densely punctate. 
The male characters are very remarkable; the head is larger, and the anterior part 
is curvedly emarginate in front, the space behind the labrum being occupied by a large 
membrane; the hind femora are armed on their posterior margin with some long black 
ciliz, the anterior tarsi are slightly dilated, and there is a large emargination on the 
last ventral plate. This is the sex figured. 
Only four examples have been found; they are in bad preservation, and perhaps 
immature, so that the coloration is perhaps not very correctly described. 
32. Philonthus enescens. 
Philonthus enescens, Solsky, Bull. Soc. Mosc. 1868, iv. p. 2627. 
Hab. Mexico 1. 
§ 4. Thorax seriebus dorsalibus 5-punctatis. 
33. Philonthus cavifrons. 
Subdepressus, parallelus, fuscus ; femoribus coxisque flavis, elytris abdomineque dense punctatis, subopacis ; 
capite subquadrato. 
Long. 7 millim. 
Hab. Panama, Bugaba 800 to 1500 feet (Champion). 
Similar in form to P. discoideus. Antenne dusky black, with the articular portion 
of each joint red, moderately stout, scarcely thickened outwardly; penultimate joints 
not quite so long as broad. Mandibles elongate, yellowish ; terminal joint of the palpi 
long and slender. Head about as broad as the thorax; the latter scarcely narrowed in 
