206 STAPHYLINIDA. 
tuation and pubescence. Elytra short, but longer than the thorax, closely and exces- 
sively finely punctate. Hind body shining and impunctate. Legs clear yellow. 
Only a single individual has been found; it is without any external indication of 
its sex. 
15. Myrmedonia fallax. 
Parva, nigra, antennarum basi pedibusque fuscis, nitidula, fere levigata, tantum in elytris subtilissime punc- 
tulata ; antennis crassiusculis ; prothorace omnium fortiter transverso, elytris quam hic longioribus. 
Long. 23 millim. 
Hab. Guatemata, Capetillo (Champion). 
Antenne rather short, stout, third joint longer than second, from fourth to tenth 
each broader than its predecessor and each, except the fourth, transverse; terminal 
joint comparatively large, longer than the two preceding together. Head rather large, 
nearly as broad as the thorax, black, shining, and impunctate. Thorax very short, 
nearly as broad as the elytra, distinctly narrowed behind, hind angles very indistinct, 
surface black, shining, and impunctate. LElytra of a fuscous-black colour, very finely 
and rather closely punctate, so as to be less shining than the rest of the surface. Hind 
body not narrowed at base nor acuminate behind, the lateral margins strongly elevated, 
but very fine in the transverse direction, the surface black, shining, and impunctate. 
Legs fuscous-yellow, the tibie and tarsi more dilute than the femora. 
Only one specimen has been found; it is probably a female. It is more similar to 
Pelioptera micans, Ky., than to any other species; but the hind tarsi are elongate and 
very slender. 
16. Myrmedonia godmani. (Tab. V. fig. 19.) 
Ferruginea, antennis extrorsum, elytris angulo externo, abdomineque ex parte nigricantibus, antennarum basi 
pedibusque testaceis ; prothorace quadrato, posterius angustato, dorso insequali, fortiter punctato ; elytris 
densissime fortiter punctatis, opacis, abdomine levigato nitidulo. 
Long. 9 millim. 
Mas abdomine segmento 2° dorsali margine posteriore libero, sinuato, in medio spinoso, margine laterali libero, 
elongato, acuminato, oblique elevato, segmento 7° granulato, margine posteriore obsolete crenulato. 
Hab. Panama, Bugaba (Champion). 
Antenne rather elongate, loosely articulate and evidently setose, third joint much 
longer than second, fourth large, fifth scarcely so long as broad, tenth very evidently 
transverse. Head greatly narrower than the elytra, coarsely punctate, the vertex in 
the middle smooth. Thorax as long as broad, slightly narrowed behind, the surface 
coarsely punctate, an obscure depression in front of the scutellum, a more elongate 
one along the middle, and another at each side ; the punctuation does not extend quite 
to the lateral margin; and the surface shows a kind of elevation running along the 
