372 STAPHYLINIDA. 
Old and New Worlds, being absent, however, from Australia and Madagascar. If 
Staphylinus and Platydracus be really distinct, as seems probable, it will be well to 
apply the Linnean name to the genus comprising the great majority of the species that 
were included in it by Linneeus. 
1. Staphylinus extensus. 
Major, niger, opacus; capite, thorace elytrisque violaceis, nigro-pubescentibus, dense haud fortiter punctatis ; 
antennis brevibus, alis fusco-fulvis. 
Long. 40 millim. 
Hab. Costa Rica, Cache (Rogers); Panama, Volcan de Chiriqui 2000 to 3000 feet 
(Champion). 
Antenne only as long as the head ; joints 6~10 transverse. Thorax about as long as 
broad, densely punctate, with an indistinct shining line along the middle, which becomes 
broader and distinct at the base. Elytra without punctuation, of a blue or violet 
colour, but rendered black by a very dense pubescence. Hind body covered with an 
intensely black tomentum. 
The male has the hind tibiz much sinuate, and the basal joint of the hind tarsus a 
good deal incrassate and very densely furnished with pubescence beneath: the apical 
ventral segment slightly, the preceding one scarcely visibly, emarginate beneath. 
Mr. Champion found four examples in tapirs’ dung in the forests, Rogers a single 
specimen which is now in very bad state. The species is excessively similar to S. buqueti, 
but the front parts are more blue, the hind body more intensely black, and the sexual 
development of the hind legs of the male is greater, while the emargination of the ventral 
plates is much less. 
2. Staphylinus ferox. (Tab. IX. fig. 14, wing.) 
Staphylinus ferox, Nordm. Symb. p. 39’; Er. Gen. et Spec. Staph. p. 384’. 
Hab. Mexico, Cordova (Sallé), Jalapa!? (Hoge); Panama, Volcan de Chiriqui, 
4000 to 6000 feet, Bugaba 800 to 1500 feet (Champion). 
3. Staphylinus atrox. (Tab. IX. fig. 15, wing.) 
Staphylinus atrox,.Nordm. Symbol. p. 88°. 
Hab. Muxico1 (Flohr), Cordova, Toxpam (Sallé), Jalapa (Hoge). 
Erichson has stated that S. atrox, Nordm., is a synonym of the Brazilian 8. buqueti, 
and that Nordmann was wrong in stating the insect to be from Mexico. It appears to 
me, however, that Nordmann was correct, and that Erichson, confounding the S. atroa 
with the Brazilian species, inferred Nordmann to be in error on account of the 
habitat of other specimens. At any rate, Nordmann’s description applies to the 
