282 STAPHYLINIDA. 
narrower than the thorax, rounded behind. Thorax very transverse, twice as broad 
as long, only indistinctly punctate. Elytra not much longer than the thorax, rather 
sparingly sculptured. Hind body more closely strigose-punctate. 
The unique individual of this very distinct species is no doubt a male; the whole of 
the upper surface of the head is very deeply hollowed, and extremely densely and finely 
punctate; the apical dorsal plates are almost destitute of granulation. 
EUDERA. 
Eudera, Fauv. Bull. Soc. L. Normand. x. p. 257 (1866). 
This genus was established for a small Chilian insect, and the only subsequent addition 
to it has been the EZ. cava. Whether LH. cava should not rather be referred to Ophio- 
glossa, Fauv., is doubtful; but as it is uncertain whether Ophioglossa and Eudera are 
really distinct, this point is not of much importance. 
1. Kudera cava. 
Eudera cava, Sharp, Tr. Ent. Soc. Lond. 1876, p. 40°. 
Hab. Nicaracua, Chontales (Janson).—Sourn America, Para}. 
GANSIA. 
Statura gracilis. Caput exsertum, collo discreto, sat angusto. Coxe intermedie distantes, acetabula arguta. 
Prothoracis latera haud inflexa. 
The insects for which this genus is established are of small size, but are amongst the 
most elegant of the Staphylinide; they are of Falagrioid form, but not only do they 
differ from these members of the Myrmedoniina by the tarsal structure, but also when 
careful examination is made they appear, independent of that fact, to be quite isolated, 
and they should apparently be placed as the culminating point of the Bolitocharina, 
the Falagria group of genera occupying a similar position in the Myrmedoniina. The 
antecoxal piece of the prosternum is quite small, but the supracoxal portion is large, 
and bears on the middle in front a prominent small lamina or plate; behind the coxe 
the prosternum is membranous, and the side pieces of the prothorax are small and are 
not inflexed. ‘The mesosternum is constricted just behind the front margin so as to 
form a broad, very short neck, and the middle coxe are rather widely separated, and 
their definite acetabula are surrounded entirely with a fine raised margin; the meta- 
sternum is much produced between the coxe, so that its process is longer than that of 
the mesosternum, the two processes being intimately connected by a somewhat indefinite 
suture. 
The place of the genus is near Ewvira and Autalia, from each of which, however, it 
is abundantly distinct by the structure of the prothoracic and mesosternal pieces. ‘The 
only species that can be assigned to it, besides the two here described, is the Amazonian 
F. varicornis, Shp. 
