328 Mr. D. STi:iri)'s Contrlhutwns to the 



In the male the 7th ventral plate Is broad and rounded 

 at the extremity, towards which part tlie punctui*es become 

 more sparing, so that at the apex, in the middle, they arc 

 quite wanting ; the ventral plate of the 8th segment forms 

 a deep, elongate trough, terminated at its extremity by a 

 curved, elongate spine. 



Tapajos; only one individual. 



14. Pinopliilus sulcntus,n.'S,^. Niger, parallelus ; tho- 

 race bisulcato, grosse punctato, interstitiis nitidis ; elytris 

 dense fortiter pimctatis, fere opacis ; antennis gracillimis, 

 elongatis, rufescentibus, basi cum pedibus palpiscpie pal- 

 lide testaceis. Long. corp. 8 lin. 



Mas : abdomine segmento 7° ventrali sat producto, apice 

 lato, sat profunde latius emarginato. 



Antennae rather longer than head and thorax, extremely 

 slender; 3rd joint distinctly longer than 2nd, basal joint 

 pale yellow, the rest rather dark. Head shining in front, 

 opaque behind, the back part coriaceous, and the hinder 

 angles wdth obsolete, very coarse punctuation ; the front 

 ])art with sparse, fine punctures, with two coarse ones in 

 the middle, immediately behind the labrum, and Avith four 

 or five other large punctures obliquely placed on each side, 

 near the front. Thorax about one-fourth longer than 

 broad, a little narrowed behind, Avith extremely coarse, 

 shallow punctures ; the interstices very shining, the punc- 

 tures opaque, being coriaceous; along the middle Avith two 

 broad, longitudinal impressions, rather deep behind, indis- 

 tinct toAvards the front ; in these impressions the punctures 

 are confluent ; small spaces near the front and hind angles 

 are free fi'om punctures. Elytra hardly longer than the 

 thorax, coarsely and closely rugosely punctured. Hind 

 body dull, rather closely, moderately finely punctured. 

 Legs pale yelloAV, cox;\3 pitchy. 



In the $ the under part of the 7tli segment of the hind 

 body is produced into a short, broad plate, the extremity 

 of Avhich is occupied by a broad and rather deep notch ; the 

 ventral plate of the 8th segment forms a trough, furnished 

 at the extremity A\dth a very short projection. 



Ega ; three individuals, one $ , two $ . 



15. Plnojyhilus duplex, n. sp. Niger, parallelus, tho- 

 race bisulcato, grosse punctato, interstitiis nitidis; elytris 

 dense fortiter punctatis, fere opacis ; antennis gracillimis. 



