412 STAPHYLINIDA. 
may even be twice as broad as it is in the female; the terminal ventral plate has a 
moderately large notch ; the anterior femora are spinose, and the posterior femora are 
furnished with a series of elongate, but subdepressed spines along the under ridge of 
their hind margin, so that this sex will probably be supposed, on casual inspection, to 
be a species of Belonuchus. 
A series of half a dozen examples was met with in rotten palm-fruits; the figure is 
taken from a male example. 
42. Philonthus rufocaudus. 
Parum latus, nigerrimus, nitidus; abdominis segmentis duobus ultimis lete rufo-testaceis; antennis latis ; 
elytris parcissime punctatis, abdomine parcius punctato, conspicue nigro-setosello; thorace serie dorsali 
5- vel 6-punctato. 
Long. 6-8 millim. 
Hab. Panama, Bugaba, Volcan de Chiriqui (Champion). 
Antenne very broad, joints 5-10 strongly transverse. Head evidently narrowed 
behind the eyes. Thorax almost straight at the sides. Scutellum with only a few 
punctures. Elytra very sparingly punctate, and with a few erect serial setee. Hind body 
only sparingly punctate, but with remarkable distinct pubescence and coarse sete; the 
two terminal segments as well as the apical styles bright reddish yellow, the coarse 
black sete across the middle of the penultimate segment very remarkable. 
The male has a small notch on the last ventral plate, but the front tarsi are quite 
simple; the anterior femora are apparently more spinose than they are in the female. 
The number of punctures in the thoracic discoidal series is sometimes six instead of 
five. 
43. Philonthus platypterus. (Tab. XI. fig. 3.) 
Sat latus, depressus, niger; abdominis segmentis duobus ultimis rufo-testaceis; capite subquadrato, prothorace 
posterius angustato; elytris abdomineque crebrius punctatis ; femoribus tarsisque piceis. 
Long. 10 millim. 
Hab. Guaremara, Cerro Zunil 4000 to 5000 feet (Champion). 
Antenne rather short, not stout, the penultimate joint as long as broad. Head 
broader than the thorax, with numerous coarse punctures on the sides, but impunctate 
along the middle, a broad impression in front; the eyes rather small. Thorax rather 
slender, and distinctly narrowed behind, the discoidal punctures large. Scutellum 
finely punctate. Elytra rather shining, but somewhat closely and not coarsely punctate. 
Hind body black, with the two terminal segments and the armature bright reddish 
yellow, rather densely and not finely punctate; basal joint of hind foot scarcely so long 
as the apical joint. 
This species was found under sappy bark. It has quite the aspect of a Belonuchus, 
but the femora are destitute of spines, and though the lateral seta of the prothorax is 
