StaphylinidcB of the Amazon Valley. 269 



mity. Thorax convex, about as long* as broad, only 

 slightly narrowed behind, and bnt slightly curved at the 

 sides; the front and fr'ont angles moderately rounded. 

 Elytra quadrate, about as long as and as broad as the 

 thorax, shining reddish-yelloAv ; the raised suture and an 

 oblique dash on the middle of each blackish, with fine 

 sutural and two or three lateral rows of fine distant seti- 

 gerous punctures. Hind body finely but not densely 

 punctured ; the 6th segment with a large spot on either 

 side blackish. 



In the male the front tarsi are distinctly dilated ; the 

 ventral plate of the 6th segment of the hind body has an 

 extremely slight emargination in the middle at the extre- 

 mity ; the ventral plate of the 7th segment has a small 

 emargination at the extremity and in front of this a short 

 smooth depression. In the female the front tarsi are 

 scarcely dilated. 



Tapajos ; two male, three female specimens. 



Ohs. — Though excessively similar in general appear- 

 ance to L. polita and L. germana, this species is readily 

 to be distinguished from them by the peculiar tubercle on 

 the men turn. 



22. Lithocharis picta, n. sp. Rufo-testacea, nitida, 

 parce nigro-setosa, nigro-variegata ; abdomine crebre sub- 

 tiliter punctato ; mento tuberculato. Long. corp. 3 lin. 



Antennae reddish-yellow, slender, about as long as head 

 and thorax, not thicker at the extremity ; 3rd joint dis- 

 tinctly longer than 2nd ; 10th quite twice as long as broad. 

 Mandibles moderately long, each with tAvo short teeth in 

 the middle. Head about as broad as the thorax, shining 

 red, the clypeus in fi-ont, and an ill-defined transverse 

 mark on the vertex, infuscate. Thorax about as long as 

 broad, scarcely narroAved behind, shining red, the sides and 

 the middle with irregular large dark marks. Elytra about 

 as long as the thorax, shining red, with a large dull mark 

 extending obliquely from the shoulder to the inner angle, 

 the series of punctures along the suture and towards the 

 sides distinct. Hind body finely and rather closely punc- 

 tured, reddish, with the anterior outer angle of each seg- 

 ment blackish ; the 6th segment entirely blackish except 

 towards the hind margin. 



St. Paulo. 



Ohs. — The single individual I have seen of this species 



