Staphylinidce of the Amazon Valley. 75 



coarse punctures, they being most numerous and distinct 

 towards the outer angle. Hind body dark yellomsh, 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 acuminate spine. 



Garrao; a single male found in fimgus by Dr. Trail, 

 nth November, 1874. 



Obs. — The male characters here scarcely differ fi'om 

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

 distinguished ; the coarse punctures on the elytra of the 

 G.juncta will afford an easy mean-s of distinguishing the 

 species fi-om G. IcBvis. 



6. Gyrophcena conve.ra, n. sp. $. Nitidula, 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 triangular! apice fissa, utrinque spina elongata. 



Antennje with the four 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 narrower 

 than the thorax, the eyes moderately large and finely 

 granulated, pitchy in colour, and with a series of about 

 four fine punctures on each side the middle. Thorax 

 strongly transverse, rounded at the sides and narrowed 

 towards the front; the base distinctly margined and slightly 

 trimcate in front of the scutellum, and a little 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 fi-ont margin. 

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

 pitchy, with the shoulders paler, along the suture Avith a 

 series of fine tubercles and Avith other tubercles elsewhere. 

 Hind bod}^ broad, yellow, almost impunctate. Legs pale 

 vellow. 



