Stai)hylinidcB of the Amazon Valley. 107 



finely punctured and pubescent, the middle parts much 

 more sparingly so ; the underside quite dull and finely 

 pubescent ; it is of a pitchy or pitchy-red colour. Thorax 

 as broad as the elytra, rather longer than broad, of a dark- 

 reddish colour ; a space along the middle, and another of 

 about equal width at the base, free from punctures ; the 

 other parts rather sparingly and irregularly punctured. 

 Elytra about as long as the thorax, reddish, very densely 

 and finely punctured, with a dense very fine fuscous 

 pubescence. Hind body pitchy ; the extremity and the 

 margins of the segments reddish, very densely and finely 

 punctured and densely pubescent. Legs yellow. 

 Ega, Tapajos, St. Pavdo ; six individuals. 



8. Plafijprosopus opacifrons, n. sp. Piceus, antennis 

 pedibusque obscure testaceis ; elytris, abdomine segmen- 

 torum marginibus, anoque ferrugineis ; capite omnium 

 dense subtilissimeque punctato, pubescenteque, peropaco. 

 Long. Corp. 5^ lin. 



The sculpture of the upper surface of the head at once 

 distinguishes this species from the others here previously 

 described. . The antennae are rather long and slender, 

 about as long as head and thorax, dull yellow ; 3rd joint 

 much longer than 2nd; 4 — 10 each a little shorter than 

 the preceding one, the 10th rather longer than broad. 

 Head about as broad as the thorax, nearly black, quite 

 dull, very densely, evenly and finely punctured and pubes- 

 cent. Thorax pitchy, slightly longer than broad, rather 

 closely punctured, a narrow line along the middle free 

 from punctures. Elytra quite as long as the thorax, dull 

 reddish, very finely and densely punctured and pubescent. 

 Hind body dusky, with the margins of the segments and 

 its extremity reddish, very densely and finely punctured 

 and pubescent. Legs dull yellow. 



Ega; one specimen. 



9. Platf/prosopus frontalis, n. sp. Fusco-rufus, opacus, 

 Ihorace nitido, pedibus testaceis ; capite, elytris, abdomi- 

 neque dense subtilissimeque punctatis et flavescenti-pubes- 

 centibus ; thorace ad angulos anteriores dense subtiliter, 

 disco parcius fortiter punctato, medio longitudinaliter im- 

 punctato. Long. corp. 5 lin. 



Anteunre obscure red, rather long; 3rd joint much 

 longer than 2nd. Head extremely densely covered with 



