686 STAPHYLINIDA. 
Antenne with the terminal joint nearly twice as long as the tenth. Head shining, 
impunctate; eyes rather small. Thorax rather strongly transverse, curvate, not 
angulate at the sides; hind angles obtuse, indistinct ; surface rather closely and coarsely 
punctured, with a very fine channel extending all along the middle. Elytra much longer 
than the thorax, closely and rather finely punctate. Hind body almost impunctate. 
Mr. Champion procured a large number of specimens of this obscure little Bledzus, 
all of which were captured on the wing towards sunset, and near the banks of a small 
stream. The species is allied to the Amazonian B. simplex, but has much longer elytra. 
4. Bledius bifasciatus. 
Minutus, subopacus, minutissime punctatus, piceus ; capite nigricante, mandibulis, antennis, pedibus elytrisque 
testaceis, his basi apiceque transversim nigris ; capite supra antennas utrinque tuberculo acuto; mandibulis 
elongatis, tenuibus, curvatis. 
Long. 2 millim. 
Hab. Guatemata, Rio Naranjo 450 feet, Pantaleon (Champion). 
Head very broad, dull, without visible punctuation. Thorax rather shining, almost 
impunctate, with traces of an obliterated channel along the middle ; the sides are almost 
straight nearly to the base, where they become greatly narrowed. Elytra obsoletely 
punctate. 
This minute but elegant Bledius is not closely allied to any species known to me. 
Seven examples were obtained. 
5. Bledius infantilis. 
Minutus, rufescens ; capite fusco, antennis pedibusque flavis, elytris testaceis; prothorace sat transverso, parce 
punctato, disco obsolete canaliculato; elytris dense subtiliterque punctatis. 
Long. 2 millim. 
Hab. Mexico, Presidio (Forrer). 
Head impunctate; eyes large, very convex; mandibles very short. Thorax dark red, 
rather shining ; subobsoletely and sparingly, but not finely, punctured; sides straight 
nearly to the base, then gently rounded so that the hind angles cannot be detected. 
Elytra longer than the thorax, each very rounded at the apex. Seven examples. 
Closely allied to B. gregarius, but still smaller and readily distinguished by the much 
larger eyes. It is almost equally close to B. muticus, from the Amazons valley, but that 
species has a shorter thorax, with the dorsal channel still more obliterated 
PLATYSTETHUS. 
Platystethus, Mannerheim, Brach. p. 46 (1830). 
Platysthetus, Erichson, Gen. et Spec. Staph. p. 781. 
This genus is at present best represented in the north temperate regions of the Old 
World, but it is probably widely distributed; the species are minute unattractive 
