264 STAPHYLINIDZ. 
19. Gyrophena gracilicornis. (Tab. VI. fig. 13.) 
Subdepressa, testacea, nitida, capite, elytris (his basi excepta) abdominisque cingulo nigricantibus ; antennis 
elongatis, articulis tertio quartoque elongatis ; elytris parce punctatis ; oculis magnis. 
Long. 33 millim. 
Hab. Guaremata, Senahu (Champion); Panama, David (Champion). 
Antenne slender and elongate; the third and fourth joints slender, even the tenth 
longer than broad; terminal joint rather elongate. Thorax very strongly transverse, 
with four very minute punctures on the middle. Flytra in greater part black. 
The male characters are very remarkable: there is a strongly elevated plica at the 
outer margin of each wing-case a little before the extremity, and a second, oblique, 
less elevated plica near the suture behind; the lateral margins of the hind body are 
incrassate, and that of the second segment bears an elongate, elevated, acute free 
angle or spine; the sixth dorsal plate has the basal portion broadly depressed in the 
middle; and the hind margin of the seventh plate is narrowed towards the extremity 
and has a very short tooth on each side, between which it projects as a short broad 
angular prominence reaching about as far back as the lateral teeth. The female has a 
short broad tooth on each side of the hind margin of the seventh dorsal plate. 
The three individuals from Panama from which I have taken this description are 
badly preserved. The unique female from Senahu is figured, and has the antenne 
slightly less elongate than has the only individual from Panama that has not lost these 
organs. . 
This and the two following species belong to a group characteristic of the New 
World, and remarkable by the large, convex, coarsely-facetted eyes. The group appears 
well entitled to generic distinction. 
20. Gyrophena sallei. 
Subdepressa, testacea, nitida, capite, elytrorum apice abdominisque cingulo nigricantibus; antennis sat elon- 
gatis, articulis tertio quartoque mediocribus; elytris parce punctatis; oculis magnis. 
Long. 3 millim. 
Hab. Mzxico, Vera Cruz (Sailé). 
This species, so far as I can judge from a single pair in bad condition, is extremely 
closely allied to G. gracilicornis, but has the antenne less elongate, the sexual characters 
of the male a little different, and the black colour on the wing-cases indefinite and 
covering only the outer apical angle. 
In the male the wing-cases bear two elevated folds similar to those of G. gracilicornis, 
and the punctuation assumes the form of obsolete granules ; the lateral margins of the 
hind body are much incrassate, but there is no detached process on the second segment ; 
the dorsal plate of the sixth segment is broadly depressed along the middle; and the 
apical teeth of the following segment are even shorter and more obtuse and approxi- 
