694 STAPHYLINIDA. 
terminal joint very long and of a dull red colour. The clypeus is rounded in front, 
and shining, though bearing a few punctures ; the vertex coarsely strigose. The thorax 
is somewhat strigose, but obscurely so on account of the deep grooves and the large 
lateral depressions occupying the greater part of the surface. The elytra are a good 
deal longer than the thorax. The hind body is black and shining. 
17. Oxytelus externus. 
Rufo-piceus, nitidus; antennis pedibusque testaceis; capite medio sublevigato, angulis posterioribus sculptu- 
ratis; prothorace profunde trisulcato ; elytris sublevigatis, haud strigosis sed parce punctatis minuteque 
setosulis. 
Mas clypei medio producto; lobo elongato, deplanato, apice subobtuso. 
Long. 3 millim. 
Hab. Panama, Bugaba (Champion). 
This is a very distinct species, of which only one example has been obtained; it will 
be readily distinguished by the pallid antenne and by the different form of the cephalic 
spine, which is here straight, flattened, and almost blunt at the extremity. The man- 
dibles are elongate. The head is nearly smooth in the middle, though there is a very 
distinct sculpture at the hind angles. The thorax has very deep grooves, and also a 
very fine distant punctuation which is still more indistinct than that on the elytra. I 
do not observe any sexual character on the hind body. 
APOCELLUS. 
Apocellus, Erichson, Gen. et Spec. Staph. p. 812 (1840) ; Leconte, Tr. Am. Ent. Soe. vi. p. 247. 
This genus contains fifteen described species—all from temperate and tropical 
regions of the New World. The genus is a very distinct one, and some of its 
species have been mistaken for members of the “ Aleocharine”; the male characters 
are remarkable and unlike those of any other known Coleoptera. Leconte records the 
North-American species as of stercoraceous habits, and Mr. Champion makes a similar 
statement about those of our region. 
1. Apocellus sphericollis. (Tab. XVIII. fig. 13.) 
Lathrobium sphericolle, Say, Tr. Am. Phil. Soc. iv. p. 455°; Lec. Complete Writings of Thomas 
Say, ii. p. 570°. 
Apocellus sphericollis, Er. Gen. et Spec. Staph. p. 813, t. 2. f£.5°; Lec. Tr. Am. Ent. Soc. vi. 
p- 248%. 
Hab. Nortu America! 23 4,—Mexico (Truqui, Flohr), Guanajuato (Sallé), Yautepec 
(Flohr), Jalapa, Tehuacan, Cerro de Plumas, Mirador (Hdge), Cordova (Hoge, Sallé): 
Teapa (Chevrolat) ; Guatema.a (Sallé), near the city (Salvin, Champion), San Gerénimo 
(Champion). 
I am not able to discriminate more than one species amongst the large number of 
examples before me, though they vary much in colour and size, and somewhat in the 
