Staplujlinidce of the Amazon Valley. 105 



tliorace magis rufo, elytris, abdomine scgmentorum mar- 

 ginibus anoque ferragineis, antennis peclibusque testaceis ; 

 capite supra crebre fortiter punctato, nitido, vertice medio 

 impunctato. Long. corp. 4| lin. 



Antennae rather slender, a little shorter than head and 

 thorax, dull yellow ; 3rd joint one and a half times the 

 length of the 2nd ; 4 — 10 each just a little shorter and 

 stouter than the preceding one, 4th longer than broad, 

 10th about as long as broad. Head pitchy, above coarsely 

 and rather closely punctured, the punctures closest about 

 the hind angles and front part, the Tiiiddle of the vertex 

 free, but with a few very fine and obsolete punctures ; be- 

 neath it is very opaque, from its very fine and dense rugulose 

 punctuation. Thorax pitchy red, very shining, about as 

 long as broad, sparingly punctured, the punctures con- 

 sisting of a row of five or six on each side the middle, and 

 fifteen or twenty others on each side of these towards the 

 front part. Elytra quite as long as the thorax, dull red, 

 closely and finely punctured. Hind body of a pitchy 

 colour, the extremity and margins of the segments reddish ; 

 it is very finely punctured, and with a very dense fine 

 pubescence. Legs yellow. 



Tapajos ; two specimens. 



5. Platj/prosopus rectus, n. sp. Augustus, parallelus, 

 rufescens, capite piceo-rufo, crebre fortiter punctato, nitido; 

 pedibus testaceis ; thorace nitido, medio utrinque parce 

 seriatim punctato, et versus latera anterius pimctis 

 nonnullis; elytris abdomineque dense subtiliter punctatis, 

 opacis. Long. corp. extens. 4^ lin. ; lat. ^ lin. 



Very narrow and parallel. Antennas rather slender, 

 1 lin. in length ; red. Head rather darker than the other 

 parts, narrow, coarsely punctured, the punctures wanting 

 on a space down the middle except at the anterior parts. 

 Thoi'ax longer than broad, straight at the sides, just as 

 broad as the elytra; reddish, shining, bearing only a few 

 punctures, viz., a series of about four large punctures on 

 each side of the middle, and a few other large punctures 

 between these and the outside towards the front. Elytra 

 scarcely longer than the thorax, of an obscure reddish 

 colour, densely and finely punctvu'ed and densely pubes- 

 cent. Hind body rufo-fuscous, densely and finely punc- 

 tm-ed and densely 2:)ubescent. Legs yellow ; imderside of 

 head very densely sculptured and opaque. 



