Mr. H. W. Bates on 
62:; 
medio fortiter dentatis^ angulis. posticis dentiformi- 
bus_, supra grosse punctatus^ disco impressione magna 
triloba. Scutellum Iseve. Elytra oblongo-quadrata^ 
> tertia parte basali grosse punctato-rugosa, dein 
, subito crebre subtiliter rugosa ; viridi-aDuea, basi et 
^ ' medio testaceo translucentia. Corpus subtus glaber- 
rimum_, prosterno gibbo_, Isevi. Antennae corpore 
paulo longiores^ robustae^ filiformes_, nigrae, articulis 
4 basalibus cupreis. Pedes rufi^ genicuiis fuscis. 
Long. 6 lin. 
$ . Gblongus_, saturate cyaneus_, capite tboraceque 
grossius punctatis^ vix nitidis, elytris basi tantum 
micantibus, miniato-rubris, fascia sub-basali curvata- 
. purpureo-nigra. Sulcus frontalis fundo l^vis. Thorax 
. . ut in S' quadratus, lateribus medio dente forte 
armatis, angulis posticis dentiformibus, punctatus 
scabrosus, medio impressione magna triloba. Scu- 
tellum grosse punctatum, opacum. Elytra oblonga, 
basi convexa, prope basin fortiter punctato-rugosa, 
dein subito subtiliter rugosa. Antenna corpore 
paulo breviores, minus robustae, filiformes, cyaneee, 
basi cupreo-violaceae, articulis 3-7 supra sulcatis. 
Corpus subtus cyaneum,nitidissimum. Pedes cyanei, 
genicuiis et tibiis apice violaceis, tarsis rufis. 
. Long. 10-12 lin. 
This beautiful species is readily distinguished in the 
female from P. hifasciatus by the elytra having only one 
dark fascia, and that near the base, commencing below 
the shoulder, and curving towards the suture, which it 
does not reach ; the rest of the elytral surface is of a 
clear red-lead colour, or dark Vermillion, almost opaque, 
except near the base, where it has a metallic lustre. The 
slender 11 -jointed antennae distinguish it at once from 
the female of P. nigricornis, Guer., besides the colour. 
I obtained three female specimens of precisely similar 
colours, two of which are in my own collection. The 
males of these closely- allied species are less easily to be 
distinguished ; I obtained only one example with the 
three females ; but have seen a second, similar in size, in 
Mr. Pry^s collection, also from Para. The antennae are 
notably more slender than in the S of P. nigricornis, 
and the terminal joint is much less elongate, being very 
little longer than the penultimate,. whilst it is half as long 
