StaphylinidcB of the Amazon Valley. 265 



tata antennis pedibusque obscr.re rufo-testaceis ; elytris 

 fstocSapicem versus infuscatis; prothorace basna versus 

 levSer a;.gustato, medio linea glabra abbreviate, postenus 

 profunde canaliculata. Long. corp. 1^ Im. 



Antennae setose, obscure reddish, the two basal joints 

 stout the rest slender; 3rd joint distinctly longer than 

 4th LaUm reddish, with two approximate denticles m 

 the middle Mandibles red, each with two sharp teeth in 

 Se middle. Head large, broader f- the thorax, ad 

 nuite as broad as the elytra; the vertex straight, the hind 

 Ses much rounded; the eyes rather large and promi- 

 neS iSiching quite half-way to the vertex ; the colour 

 ow4 Vy -d, the surface densely --^^:^^^^% 

 T^unctured. Thorax narrower than the elytia, about as 

 FoZ as b oad, distinctly narrowed behind the front and 

 fro?t angles much rounded, the colour obscure reddish 

 father m? Omn the head; the surface densely covered 

 wUh fine asperities, along the middle a fiiie gl-^rou^^^^^^^^^^^^ 

 L hind part of which is occupied by a deep and distmct 

 channel Elytra a httle longer than the thorax finely 

 and not veiy densely punctured, yellowish mfuscate 

 towards the Ltremit^, alon^/^^ middle of eaclj^are 

 indications of two abbreviated impressed hues. Hnid 

 bodvvVry densely and finely punctured. Legs yel lo^ylsh; 

 Wlarsi distinctly dilated, hind tarsi with the 4th jomt 



^tlfrftingle individual, which exhibits no certain 

 indication of sex, and is probably a female. 



17. Lithocharis ardua, n. sp. Fusco-ferruginea an- 

 tennis nedibusque testaceis, thorace elytrisque leviter 

 S^lisTthoral brevi,^basin -sus -gu^^J^;:' ^j^ 

 linea abbreviate, glabra, canaliculata. Long. coip. 



11 lin- , 



Antenna setose, yellow; 1st and 2nd joints stout, the 

 otliers slender, 3rd not longer than 4th Labrmn large, 

 Swo distinct approximate teeth - the midd e ar^^^^^^ 

 little sinuate on each side of these, reddish. Mandibles 



^ddisneUow, rather slender, each with two mther large, 

 sharp teS. in the middle. Head large, broader han the 



homx, and quite as broad as the elytra, quadrate the hmd 

 anJl- -gl^tLgles and a little rounded ; the vertex a W 



stmio-ht, the colour obscure pitchy, dull; the suitace 



iosety and indistinctly, in front obsoletely, punctured. 



