StaphylinidcB of the Amazon Valley. 95 



toAvards the extremity; the four basal jomts yellowish, the 

 six following joints and the base of the 11th blackish, the 

 rest of the last joint quite pale. Head small, narrower 

 than in C pubescens. Thorax ample and very convex, 

 the sides much narrowed towards the front, the fi-ont 

 margin very distinctly bisiiuiate ; the hind angles are 

 obtuse and roimded, the punctuation and pubescence very 

 fine. Elytra about as long as the thorax, their punctua- 

 tion and pubescence fine but not dense. The hind body 

 is densely and distinctly punctured ; its Avell-marked 

 pubescence is of a golden colour. 



The male has a large angular notch at the hind part of 

 the ventral plate of the 7th segment of the hind body; the 

 hind margin of the dorsal plate is simple. 



In the female the dorsal plate of this segment is divided 

 at the extremity by three naiTow elongate incisions into 

 four approximate processes, Avhile the hind margin of the 

 ventral plate is furnished Avith long cilia. 



In each sex the front tarsi are rather strongly dilated. 



Ega ; two individuals. 



2. Conurus sctosus, n. sp. Angustulus, cinnamomeus, 

 subtilissime punctulatus et pubescens, abdomine longius 

 nigro-setosus ; antennis gracilibus, basi apiceque pallidi- 

 oribus; prothorace elongato. Long. corp. 1§ lin. 



AntennjB slender and elongate, pale yellow, a little 

 darker in the middle ; 3rd joint about equal in length to 

 2nd; 4th slender and elongate; 5 — 10 each a little broader 

 and shorter than its predecessor, 10th slightly longer 

 than broad; 11th rather elongate, nearly twice as long as 

 10th. Thorax longer than broad, nearly straight at the 

 base, the hind angles almost rectangidar, but a little 

 rounded, the sides curved and a little narrowed towards 

 the front, the surface very finely and indistinctly punc- 

 tnred. Elytra hardly so long as the thorax, similarly but 

 a little more distinctly punctured. Hind body slender, 

 very finely punctured, fiirnished with remarkably evident 

 long black sette. Legs pale yellow; tarsi elongate and 

 very slender. 



Gan-ao ; a single individual found in fungus by Dr. 

 Trail, 11th November, 1874. 



Ohs. — This individual is, I have no doubt, a male, as 

 it has the fi-ont tarsi slightly dilated. The elongate black 

 setre with which the very slender extremity of the hind 

 body is armed do not allow me to see with certainty the 



