GYROPHAENA. 2590 
This tiny insect is of broader form than G. pumila, and has the elytra visibly 
punctate. I do not see any sexual characters among the sixteen individuals found by 
Mr. Champion. 
8. Gyrophena varians. 
Minuta, angustula, picea, antennis pedibusque flavis, illis haud crassis, apicem versus leviter incrassatis, articulis 
penultimis leviter transversis; capite angustulo; prothorace parvo, convexo, glabro; elytris brevibus, in 
utroque sexu granulatis, sed maris interdum fere levigatis. 
Long. vix 13 millim. 
Hab. GuateMaa, San Juan in Vera Paz (Champion). 
Antenne clear yellow, slightly thickened from the fifth joint to the apex; third 
joint short and slender, half as long as the second; fourth minute but distinct. Head 
narrow. Thorax without impressed punctures. LElytra but little longer than the 
thorax. 
Ten specimens of this minute creature have been discovered by Mr. Champion. Its 
sexual characters are of an extraordinary nature. Seven of the individuals are females 
and have the elytra furnished with rather coarse raised granules, and two fine short 
convergent raised lines on the dorsal plate of the sixth segment; the dorsal plate of 
the seventh segment is triangular in the middle and has on each side an elongate 
remarkably slender spine, placed very near to the side of the triangle and projecting as 
far back as it. The three males differ greatly in the amount of development of their 
sexual peculiarities: in the individual where they are greatly developed there are four 
larger, irregular tuberculiform elevations near the suture of the wing-cases; the fifth 
dorsal plate of the hind body bears two elongate, subapproximate, acuminate, depressed 
spines, which project backwards over the following segment; the dorsal plate of the 
seventh segment forms in the middle an elongate nearly parallel-sided lobe, the 
extremity of which is emarginate; in another individual of this sex the elytra are 
nearly smooth, and there is no trace of the spines of the fifth segment,—the third 
individual being intermediate between the other two. 
4, Gyrophena fuscipes. 
Parum convexa, nigra, antennis fusco-testaceis, pedibus fuscis ; antennis articulis 5°-10™ transversis; pro- 
thorace fortiter convexo, glabro ; elytris (in utroque sexu ?) subtiliter granulatis. 
Long. 13 millim. 
Hab. Guatemaa, San Gerénimo (Champion). 
Antenne of a sordid testaceous colour, not stout; third joint small, shorter than the 
second; fourth very indistinct; fifth to tenth transverse; terminal joint short. Thorax 
small, glabrous, without impressed punctures, the sides very depressed. Elytra longer 
than the thorax, with raised minute granules rather evenly distributed over the surface. 
Legs dark ; the tarsi, however, nearly yellow. 
