Stai>hijlinid(B of the Amazon Valley, 377 



sparingly but coarsely punctured, the apical segments with 

 only sparing and fine punctures. Legs dark yellow ; tarsi 

 rather long, with the lobes broad. Genre coarsely and 

 rather closely punctured; underside of hind body very 

 coarsely punctured. 



Tapajos; a single individual, which is I believe a female. 



24. Stenus parviceps, n. sp. (Sect. II. B, Er.) Niger, 

 nitidus, supra parcius albido-pubescens, antennis palpisque 

 testaceis, illarum clava obscuriore ; pedibus infuscato-rufis, 

 femoribus tibiisque basi quam apice dilutioribus ; capite 

 thorace vix latiore, bisulcato ; elytris thorace longioi-ibus, 

 crebre fortiter pnnctatis ; abdomine apicem versus angus- 

 tato, crebre fortiter punctato. Long. corp. 2 lin. 



Antennae moderately long, yellow, with the club darker ; 

 3rd joint a good deal longer than 4th. Palpi yellow, the 

 apical joint darker than the preceding one. Head much 

 narrower than the elytra, and scarcely broader than the 

 thorax, not excavate, but distinctly bisulcate ; the sixrface 

 irregularly punctured, as w^hen viewed from the front, the 

 middle and some spaces near the eyes appear like shining 

 s])ots. Thorax scarcely longer than broad, greatly nar- 

 rower than the elytra, the sides not rounded but a little 

 narrower at the base than in front ; the surface coarsely, 

 moderately closely punctured, the punctures absent from 

 a very small space behind the middle. Elytra much 

 longer and broader than the thorax, the shoulders rec- 

 tangular and a little elevated, coarsely and closely but not 

 densely punctured. Hind body a good deal narrowed 

 towards the extremity, rather coarsely punctured ; the 

 punctures on the apical segments much finer than at the 

 base, the punctures rather close, the pubescence very fine 

 and scanty. Base of femora reddish, extremity infuscate ; 

 front coxffi reddish, hind ones pitchy; tibi* yellowish, in- 

 fuscate towards the exti'eraity ; tarsi infuscate-yellovv : 

 under surface deeply, coarsely and densely punctured, 

 opaque and with the white pubescence elongate and con- 

 spicuous. 



The male on the underside exhibits a notch at the ex- 

 tremity of the 7th segment ; it is, however, much con- 

 cealed by the dense, fine, elongate, pale pubescence, w^hich 

 covers the middle of the segment ; the 6th segment is also 

 densely pubescent along the middle, and its hind margin 

 is slightly notched at the extremity. 



