Amazonian Frionides. 
63 
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- 
tennge blended into one elongate joints with a trace of 
the articulation, 
5. Pyrodes nodicornis, n. sp. 
? . P. bifasciato simillimus, gracilior, antennis 10- 
articulatis_, thoracis angulis posticis hand prominenti- 
bus. Oblongus, nigro-cyaneus, supra vix nitidus_, sub- 
tus politissimus. Caput et thorax grosse crebre 
punctati^ hoc quadrato angusto, in medio paulo dila- 
tato et valde dentate^ angulis posticis hand pro- 
minentibuSj supra impressione profunda triloba. 
Elytra postice hand attenuata^ medio vix rotundata^ 
supra prmcipue versus basin et suturam grosse rugoso- 
punctata, laete miniata_, fascia lata communi prope 
basin (margines hand attingente) alteraque apicali 
(cum precedente vitta lata suturali conjuncta) cya- 
neo-violaceis. Pedes cyanei^ violaceo-micantes. 
Antennse corpore paulo breviores^ graciles^ articulo 
decimo precedentibus latiori, colore cupreo-violaceae, 
articulo tertio haud sulcato. 
Long. 11 lin., lat. 5 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. nigricornisj Guerin, Verhandl. zool.-bot. Verein zu 
Wien, 1855, p. 598, d". 
P. ruhrozonatus , Lucas, Voy. de Castelnau, Entom. 
p. 180, pi. xi. f. 2 (1857) 
S . Breviter oblongus, variat vel fulvo-testaceus 
mneo tinctus, antennis (basi excepta) violaceo- 
nigris, vel aureo-viridis splendens, elytris semifascia 
rufa, vel cupreo-violaceus, fascia elytrali integra, vel 
