80 [September, 
abolished by most authors, ought to be maintained. The species re- 
semble the more slender Lachnophori, but are at once distinguished by 
the transverse depression of the elytra before the middle. The termi- 
nal joint of the palpi is more tumid, and the mandibles are much longer 
and narrower. The thorax is much more convex, and the margin which 
separates the pronotum from the flanks is very feeble, or partially ob- 
literated. The eyes are remarkably large and salient, and the shape of 
the head triangular, with the vertex plane. 
CHALYBE BASALIS, n. sp.—Capite et thorace cupreis, grosse ereberrime 
punctato-rugosis, mandibulis, palpis, antennarumque articulis 1—4 (cceteris 
Juscis) rufo-testaceis ; elytris fortiter striatis, striis exterioribus flecuosis, supra 
dimidio basali fulvo, fusco-maculato, dimidio apicali nigro-eeneo, fascia brevi 
maculari ante-apicali flavo-testacea ; pedibus flavo-testaceis, rufescentt macu- 
latis. Long. 2 lin. 
Banks of the Tapajos. 
CuatyBe Leprizuri, Casteln., loc. cit. Cayenne. Evidently 
closely allied to the above, but with two yellow spots on each elytron. 
CHALYBE LEUCOPA, n. sp.—Zlongata, nigro-cenea, nitida, antennarum 
articulis 4 basalibus, palpis, pedibusque testaceo-albis ; capite grossissime 
scabroso-punctato, mandibulis rufo-piceis ; thorace elongato, postice gradatim 
attenuato, bast marginato, margine laterali obliterate, supra lcevissimo, 
puncto unico utrinque discoidali, lineaque dorsali antice fortiter vm- 
pressa ; elytris fortiter striatis, interstitiis uni-seriatim, leviter, distanter 
punctulatis, utrinqgue maculis duabus (quarum una prope basin, magna, 
quadrata, altera prope apicem dimidio brevior, transversa) testaceo-albis 
ornatis. Long. 2 lin. 
Differs"from C. Leprieurii, Castelnau, by the smooth, glossy thorax. 
His description commences — “ Trés-fortement ponctué presque ru- 
b) 
gueux ;”” a phrase which can only be understood as applying to the 
whole body, but which is probably intended to apply to the head and 
thorax only. 
St. Paulo, Upper Amazons, in company with the Lachnophort. 
CHALYBE INZQUALIS, Brullé, voy. de d’Orbigny, Ins., p. 44. 
Closely allied to C. lewcopa; differing chiefly in the finely-punctured 
and roughened thorax, and especially in the margins of the pronotum 
being distinct and entire; a shallow sulcus runs up each side of the 
disc, from the situation of the usual fovea near the posterior angle. 
The elytral spots are smaller, and the palpi, base of antennz, and legs 
spotted with fuscous. 
