StaphylinidcE of the Amazon Valley. 75 



coarse punctures, tliey being- most numerous and distinct 

 towards the outer angle. Hind body dark yellowish, but 

 infuscate towards the extremity, extremely obsoletely 

 punctured. Legs yellow. 



In the male the hind margin of the dorsal plate of the 

 7th segment of the hind body bears in the middle two fine 

 approximate spines or teeth, and at each outer angle a 

 stouter acviminate spine. 



Gan-ao; a single male found in fungus by Dr. Trail, 

 11th November, 1874. 



Obs. — The male characters here scarcely differ from 

 G. IcBvis, but in other respects the two species are easily 

 distinguished ; the coarse punctures on the elytra of the 

 G.juncta will afford an easy means of distinguishing the 

 species from G. IcBvis. 



6. GyrophcBiia convexa, n. sp. $. Mtidula, picea, 

 antennarum basi, abdomine pedibusque testaceis; pro- 

 thorace antrorsum angustato, disco quadripunctato ; elytris 

 parcius granulatis; abdomine obsoletissime punctulato. 

 Long. Corp. 1^ lin. 



Mas: abdomine segmento 7° dorsali apice, medio lamina 

 magna triangulari apice fissa, utrinque spina elongata. 



Antennte -with the fom- basal joints yellowish, the others 

 blackish; 3rd joint rather shorter than 2nd; 4th much 

 smaller than any of the others; 5 — 10 scarcely differing 

 from one another, each about as long as broad; 11th joint 

 rather short, quite as stout as, and a good deal longer 

 than, the 10th. Palpi pale yellow. Head much nari'ower 

 than the thorax, the eyes moderately large and finely 

 granulated, pitchy in colour, and vd\h. a series of about 

 fom- fine punctures on each side the middle. Thorax 

 strongly transverse, rounded at the sides and narrowed 

 toAvards the front ; the base distinctly margined and slightly 

 truncate in front of the scutellum, and a httle sinuate on 

 each side near the outer angle ; the colour is pitchy, and 

 on the disc are four large equidistant punctures ; between 

 these and each side is a finer puncture, and there are also 

 two or three fine punctures very close to the front margin. 

 Elytra short and broad, about as long as the thorax, 

 pitchy, with the shoulders paler, along the sutm-e with a 

 series of fine tubercles and with other tubercles elsewhere. 

 Hind body broad, yellow, almost impunctate. Legs pale 

 yellow. 



