288 jNIr. 1). Sffp's Contributions to the 



yellow. l*al])i yellow; mandibles red. Tjabrum ])ltcliy, 

 with a small notch in the middle ; on either side of this a 

 little prominent, and ontside the prominence slightly 

 emarginate. Head dull blackish, with the neck red ; the 

 surface finely coriaceous, sparingly and finely ])unctured. 

 Thoi'ax narrow, a good deal longer than broad, scarcel}^ 

 narrowed behind, bright red ; finely and sparingly ])unc- 

 tiu-ed, with an im})un(;tatc space along the middle. Elytra 

 ])arallel, with the shoulders distinct, a little longer than 

 the tliorax, rather finely, moderately closely punctured, 

 bluish or greenisli. Hind body red, with the apical seg- 

 ments infuscate. Legs yellow ; the apex of the hiiid 

 femora distinctly, of the middle ones less distinctly, infus- 

 cate. 



In the female the ventral plate ot the 7th segment of the 

 hind body is produced, so as to form a projecting triangle 

 at the extremity ; the apex of this triangle is scarcely 

 pointed, the sides do not project in the form of teeth. 



Ega and Tapajos ; several individuals. 



This species greatly resembles our Eurojiean P.fiiscipes, 

 but is remarkably easily distinguished therefrom by the 

 coriaceous surface of the head ; it has also the autcimiD and 

 palpi differently coloured, these being clear yellow, and 

 the elytra are less closely and distinctly punctured. 



7. P(Bderus punctiger, n. sp. llufus, capite, pcctore, 

 abdominisque apice nigris, antennis fuscis, basi rufo ; coxis 

 femorumque basi rufescentibus, horum apice nigricantibus ; 

 tibiis tarsisque rufo-fuscis, elytris cyaneis, ])rothorace 

 longioribus ; capite thoraceque crebre punctatis. I^ong. 

 corj). 4 lin. 



AntennfB If lin. in length, the three basal joints 

 reddish, the rest infuscate ; ord joint much longer than 

 2nd, 4 — 10 each distinctly shorter than its predecessor, 

 10th much longer than broad. Mandibles red, infuscate 

 at the apex ; palpi red, infuscate towards the extremity. 

 Head narrow, only about half as broad as the elytra, much 

 narrowed behind the eyes, so that the constriction at the 

 neck is but little ; it is black in colour, with a blue tinge on 

 its upper side ; it is rather closely punctured, except on the 

 middle of the hinder half, where the punctures are but 

 sparing. Thorax small, greatly narrower than the elytra ; 

 towards the front it is a good deal narrowed ; it is red in 

 colour, and distinctly, regularly and rather closely punc- 



