Amazonian Prionides. §3 



again in P. nigricornis. The species seems peculiar to 

 the neighbourhood of Para. P. hifasciatus is found at 

 Surinam and Demerara, and all the female specimens I 

 have examined have the two terminal joints of the an- 

 tenn£e blended into one elongate joint, with a trace of 

 the articulation, 



5, Pyrodes nocUcornis, u. sp. 



? . P. hifasciato simillimus, gracilior, antennis 10- 

 articulatis, thoracis angulis posticis haud prominenti- 

 bus. Oblongus, nigro-cyaneus, supra vix nitidus, sub- 

 tus politissimus. Caput et thorax grosse crebre 

 punctati, hoc quadrate an gusto, in medio paulo dila- 

 tato et valde dentate, angulis posticis haud pro- 

 minentibus, supra impressione profunda triloba. 

 Elytra postice haud attenuata, medio vix rotundata, 

 supra praecipue versus basin et suturam grosse rugoso- 

 punctata, laete miniata, fascia lata communi prope 

 basin (margines haud attingente) alteraque apicali 

 (cum precedente vitta lata suturali conjuncta) cya- 

 neo-violaceis. Pedes cyanei, violaceo-micantes. 

 Antennae corpore paulo breviores, graciles, articulo 

 decimo precedentibus latiori, colore cupreo-violaceae, 

 articulo tertio haud sulcato. 



Long. 11 lin., lat. 6 lin. ? . 



One example, taken at St. Paulo, Amazons. Very 

 similar in form and colour to P. hifasciatus ; differs in 

 the tenth antennal joint being short and ovate, without 

 trace of constriction in the middle, and also in the 

 absence of projecting hind angles to the thorax. 



6. Pyrodes nigricornis. 



P. nigricornis, Guerin, Verhandl. zool.-bot. Verein zu 

 Wien, 1855, p. 598, c?. 



P. ruhrozonatus , Lucas, Voy. de Castelnau, Entom. 

 p. 180, pi. xi. f. 2 (1857) S . 



c?. Breviter oblongus, variat vel fulvo-testaceus 

 geneo tinctus, antennis (basi excepta) violaceo- 

 nigris, vel aureo-viridis splendens, elytris semifascia 

 rufa, vel cupreo-violaceus, fascia elytrali integra, vel 



