STAPHYLINUS. 389 
that there is the appearance of a darker fascia across the middle. Hind body black, 
with the hind margin of the sixth segment, the seventh segment, and the terminal 
styles yellow; the basal segments have scarcely any golden tomentum, but the fifth 
segment has a very large patch thereof, and the sixth and seventh are entirely covered 
with it. 
The male has a slight emargination of the apical ventral segment; the anterior tarsi 
are moderately dilated in each sex. 
This is another very peculiar species, with much longer and more slender feet than is 
usual in this genus, and with less broad anterior tarsi, the two next species agreeing with 
it in these respects. It is subject to some variation in colour of the metallic parts, and 
in one decayed example from Cordova the fascia on the elytra is almost entirely absent. 
42. Staphylinus tarsalis. 
Niger; capite thoraceque purpureo-aureis; elytris fulvis, basi apiceque aureo-pubescentibus; abdomine nigro- 
tomentoso, segmentis terminalibus dense aureo-tomentosis ; antennarum basi pedibusque rufis. 
Long. 17—20 millim. 
Hab. Panama, Volcan de Chiriqui (Champion). 
This, although very closely allied to S. gracilipes, is almost certainly a distinct species ; 
for, independently of the colour of the head and thorax (a point perhaps not of much 
importance), there are other differences: the head is narrower in proportion, and the 
eyes do not occupy quite so large a part of the sides, the punctuation of the head 
and thorax is finer, the sides of the thorax are distinctly sinuate in front, and the 
antennee are broader and darker in colour. 
Only two specimens have been found. 
43. Staphylinus insolitus. (Tab. IX. fig. 25.) 
Niger; capite, thorace elytrisque cyaneis, illis crebre fortiter punctatis, nitidis; abdomine apice testaceo dense 
aureo-pubescente. 
Long. 15 millim. 
Hab. Muxico, Panistlahuaca (Sailé). 
Very similar in form to S. gracilipes, though of a totally different colour. The 
antenne are thickened outwardly, nearly black. The thorax has an impunctate line 
along the middle. The elytra, of a very dark blue colour, have a fine distinct punctu- 
ation and a black pubescence. The basal segments of the hind body are without 
tomentum, and rather sparingly punctate and pubescent; the fifth segment has a little 
tomentum mingled with the pubescence, and the sixth is covered with a golden pubes- 
cence, as also is the following segment ; the hind part of the sixth, the seventh segment, 
and the terminal styles yellow. 
I have seen only a single example of this very Philonthus-like species; it is a male, 
and has a broad shallow emargination on the apical ventral plate. 
