PIAZORRHINUS. 
b’, Elytra with the sides, apex, and a large triangular space at the 
base pubescent . . oe ‘ : . 
6”. Legs short, ferruginous; antenne short, with the club acuminate- 
ovate ; elytral pubescence uniform, seriately arranged. . . . . 
6’. Femora dentate; antennal club ovate. 
c’’, Femora and tibiz not or very little darker than the tarsi. 
‘’, Upper surface black, with reddish markings (the light colour 
sometimes predominating in P. albofasciatus) ; legs in front 
ferruginous. 
a‘. Prothorax with a carinate prominence on the disc: elytral 
pubescence variegate, the white and ochreous hairs forming 
angulated alternate fasciz, the interstices shining . . 
6*. Prothorax without prominence on the disc; elytral pubescence 
not condensed into conspicuous fasciz, the interstices dull and 
densely rugulose . . . .. . . . 
d’’’, Upper surface blue; elytral pubescence very sparse and incon- 
spicuous, the interstices asperate ; the legs bluish-black 
da”, Femora and tibiz bluish or black, the tarsi rufo-testaceous. 
’, Upper surface blue or bluish-green. 
c‘. Elytra with deeply impressed striz, the interstices asperate, the 
pubescence covering a large, common, U-shaped space on the 
disc. Ce 
d‘. Elytra with shallow striz, the interstices flatter and transversely 
rugose, the pubescence scattered se oe 
f/”. Upper surface black, the elytra usually with a brassy (or more 
rarely a violaceous) lustre. 
e*. Eyes moderately large, well separated above; elytral pubescence 
very sparse, condensed into one or two narrow fasciz, the 
anterior one angulate. 
a’, Elytral interstices broad, flat, asperate ; legs stout, the femora 
each with a sharp tooth woe ee ee 
b°. Elytral interstices narrow, convex, roughly punctulate ; ; legs 
comparatively slender, the femora each with a very minute 
tooth . 2... ee ee ee ee ee 
f'. —_ very large, narrowly separated above. 
. Form subovate; elytral pubescence condensed into a patch 
below the base and a common, strongly curved, median fascia 
d’. Form oblong-subovate. 
a’. Elytral pubescence mainly condensed into a common curved 
subapical fascia - . 
b°. Elytral pubescence covering the greater part of the surface, 
a large subtriangular space at the sides excepted 
e°’, Form short-ovate; elytral pubescence sparse, and here and 
there concentrated, forming an angulated fascia before the 
middle. . . 2 1 8 ee ee ee ee 
inermis, Sp. 0. 
uniformis, Sp. D. 
albofasciatus, sp. 0. 
rugulosus, sp. 1. 
cyaneus, sp. 0. 
cyanescens, Sp. Nn. 
metallicus, sp. n. 
a 
asperatus, sp. 0. 
scutellaris, Say. 
cingulatus, sp. n. 
albocinctus, sp. n. 
vestitus, sp. Nn. 
curtus, sp. 0. 
