410° STAPHYLINIDA. 
and slender. Head subquadrate, but distinctly narrowed behind, the epistome depressed 
in the middle, and somewhat produced in front between the insertion of the antennae, 
the clypeal membrane indistinct. The antenne bear very evident exserted sete, and 
their penultimate joints are not quite so long as broad. The thorax is rather narrow, 
and nearly straight at the sides. The elytra are of a beautiful dark blue colour, 
sparingly punctate. The hind body is acuminate behind, shining, of an intense black 
colour, with only a very few punctures, but very conspicuously setose. The legs are 
quite slender. 
I do not know the sex of the three examples before me of this distinct species; they 
have the front tarsi simple, and the last ventral plate not emarginate. Although it has 
much the aspect of some of the slender Belonuchi, neither the front nor the hind 
femora are spinose. 
87. Philonthus fulgipennis. (Tab. X. fig. 18.) 
Parce punctatus, nigerrimus ; elytris fulgidis, purpureis; scutello fortiter punctato. 
Long. 64 millim. 
Hab. Panama, Chiriqui (Ridbe), Volcan de Chiriqui below 4000 feet, Boquete 3500 
feet (Champion). : 
This species is in nearly all respects similar to P. letipennis, but is readily distin- 
guished by the splendid golden-purple or coppery colour of the wing-cases; the indi- 
viduals also are a little smaller, and have slightly more slender antenne. 
A very large series of examples was captured by Mr. Champion, who informs me 
it is locally abundant in fungus growing on forest trees. I cannot detect any external 
sexual characters; the front feet are always quite slender. 
38. Philonthus seticornis. 
Parce punctatus, nigerrimus; elytris nigro-eneis ; scutello fortiter punctato. 
‘Long. 9 millim. 
Hab. Guatemata, Cerro Zunil 4000 to 5000 feet (Champion). 
Though very closely allied in structure to P. letipennis this is readily distinguished 
from that species by its differently coloured elytra; it is also rather more elongate, and 
has an evidently longer thorax. 
A series of eight examples was found showing no variation; the male has no external 
sexual marks, and the cedeagus is small and simple. 
39. Philonthus hirtiventris. 
Exongatus, subdepressus, nigerrimus, nitidus ; elytris abdomineque parce punctatis, hoc evidentius setosello ; 
capite subcirculari. 
Long. 11 millim. 
Hab. Mexico, Oaxaca, Mirador (Hége). 
