PIESTUS. 715 
nearly, obsolete, while the third is, on the contrary, increased in width. We have 
received only one example, a male; it bears a few long hairs on the basal joint of the 
antenne. 
7. Piestus chiriquensis. 
Nigro-piceus, opacus, rugoso-punctatus ; elytris tenuiter sex-costatis; pedibus rufis; metasterno medio levigato. 
Long. 5-6 millim. 
Hab. Panama, Volcan de Chiriqui 2000 to 4000 feet (Champion). 
Head finely margined in front, densely rugose; clypeal suture fine, but definite. 
Thorax transverse, densely rugose, constricted behind, not canaliculate; with a vague 
depression on the middle and in front of each hind angle, and a denticle at the sides. 
Elytra rugose, each bearing seven fine longitudinal coste, of which the second, fourth, 
and sixth are scarcely so distinct as the others. Hind body densely punctate. Meta- 
sternum polished in the middle. 
The antennz are very long in each sex, in the male remarkably so, and bear a few 
long hairs on the basal joint. 
This insect much resembles the Amazonian P. rugosus, but that species has the 
metasternum punctate all over. 
8. Piestus costatus. 
Piceus, subopacus, rugosus ; antennarum basi pedibusque rufis ; elytris tenuiter sex-costatis, costis alternis sub- 
obsoletis ; metasterno medio levigato. 
Long. 43 millim. 
Hab. Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion). 
This insect is very similar to P. chiriquensis, but, besides being smaller and narrower, 
differs in the following particulars:—The antenne are much shorter, the head is not 
margined in front, and the clypeal suture is very obsolete; the thorax is less transverse, 
and the denticle at the side is scarcely to be detected; the elytral coste are less sharply 
elevated, and the second, fourth, and sixth, though distinct at the base, become quite 
obsolete behind. One female only has been found. 
9. Piestus angularis. 
Piestus angularis, Fauv. Bull. Soc. Linn. Normand. ix. p. 35, t. 1. f. 10°; Notices ent. 1. p. 31, 
t. 1. f. 10. 
Hab. Mexico, Cordova (Sallé).—Brazit, Santa Catarina ? *. 
The only example I have seen is a very badly preserved one from Sallé’s Mexican 
collection; it agrees with Fauvel’s description and figure, but as it is from a very 
different locality, it may ultimately prove to be different. This specimen was labelled 
P. angularis by M. Sallé. 
4VYV 2 
