Staphylinidce of the Amazon Valley. 85 



besides these the outer angle on each side is also 

 produced, and forms a distinct short spine, so that 

 the ventral plate is really six-spined, the outside tooth 

 being only half the length of the one next it. The dorsal 

 plate is four-spined, but, as the spines are broken in the 

 indi%ddual described, I cannot speak of their relative 

 lengths. 



Ega ; a single female. 



5. Coproporus curtus, n. sp. Convexus, nigro-piceus, 

 nitidus, prothoracis lateribus antennarumque medio piceo- 

 rufis, his basi apiceque testaceis, pedibus rufis ; antennis 

 crassiusculis, articidis 6 — 10 leviter transversis. Long, 

 corp. 1| lin. 



Antennae rather short and stout, the three basal joints 

 yellow; 4 — 10 pitchy, 11th yellowish; 2nd and 3rd 

 joints subequal in length; joints 4 — 10 differing but 

 slightly from one another in length, each a little broader 

 than its predecessor, the 4th rather longer than broad, 

 the 10th not quite so long as broad ; 11th obtusely 

 pointed, much longer than 10th. Head blackish, im- 

 punctate, the palpi yellow. Thorax pitchy, with the sides 

 paler, shining and impunctate, the base but little sinuate, 

 so that the rounded hind angles are very little produced 

 backwardly. Scutellum impunctate. Elytra rather broad 

 and short, a good deal longer than the thorax, only a little 

 curved at the sides, and with the hind angle only mode- 

 rately rounded ; they are very finely but yet distinctly 

 punctm-ed, and have a broad obsolete impression near the 

 lateral margin. Hind body broad and short, pitchy, paler 

 towards the extremity, rather closely and distinctly punc- 

 tured, but little shining. Legs red. 



In the female the dorsal plate of the 7th segment of 

 the hind body ends in four long equidistant spines, of 

 which the middle ones are a little the longer ; the three 

 notches between the spines extend about equally far 

 forwards. The ventral plate ends in four long spines 

 and tsvo short lateral teeth ; the two middle teeth project 

 slightly farther back than those next them, and the notch 

 separating them is narrower and does not extend quite 

 so far forwards as the notch next them. 



A single female, from Parentins to Jurua ; 1st to 5th 

 April, 1874 ; Dr. Trail. 



