398 Rey. H. Clark on the Halticidee of South America. 
quadratus, rectangularis, margine antico transverso vix excavato, late- 
ribus rectis, marginatis, basi transversa, angulis anticis et posticis sub- 
rotundatis sed dente brevi notatis; ad basin fovea transversa latera 
attinet, thorax impunctatus. Scutellum triangulare. lytra parallela, 
elongata, striato-punctata. Antenne filiformes, art. 3 secundum longi- 
tudine superante, sed art. 4-9 breviore. Pedes femora robusta in g infra 
ad medium fortiter angulata; tibie robustee, ad apices dente brevi ar- 
mate; tarsorum anteriorum in ¢ art. basalis latus; wnguiculi bi- 
dentati. 
The genus Jenosis represents a very distinct form, elongate and 
parallel; the thorax is rounded at the angles, and has a basal trans- 
verse fovea; the femora of the dare armed with an inner medial 
angular projection, and the unguiculi are manifestly bidentate. 
Tenosis purpureipennis. 
T. rufa, elytris purpureis : caput super antennarum basin medio impressum, 
sparsim punctatum, nitidum : thorax confuse punctatus, rufus: seutellum 
rufo-fuscum : e/ytra striato-punctata, punctis ordinatis zequalibus: an- 
tenne rufo-fuscee, art. 1-3 rufo-flavis: pedes et corpus subtus rufi. 
Long. corp. lin. 2}, lat. lin. 4. 
Var. A. Corpus subtus et pedes nigro-violacei, femoribus apicalibus 
exceptis. 
Taken by Mr. Gray and myself at Petropolis, Rio Janeiro, in Feb- 
ruary 1857. 
In the cabinet of Mr. Baly and my own. 
Genus Cmporis, Dej. Cat. 1837, p. 411. 
Parallelo-ovalis, depressa. Caput subproductum. Palpi macillares cylin- 
drici, art. ultimo et penultimo paulum inflatis. Thorax transversus, 
lateribus subrotundatis et marginatis, angulis prominulis, ad basin trans- 
verse foveolatus. Scutellum triangulare, apice brevi vel subtruncato. 
Elytra parallela, depressa, thorace paulum latiora, apice rotundata, 
levia. Antenne filiformes, satis robust, art. 3 secundo latiore, sed 1 
et 4 breviore. Pedes graciles; wnguiculis penitus simplicibus, leviter 
appendiculatis. . 
Ceporis is, by its form generally, its antenne and its slender legs, 
related to Cacoscelis. It differs from this genus in its more transverse 
and more distinctly angulated thorax, in the basal fovea of the thorax, 
in its impunctate elytra, and in the more simple form of unguiculi, 
those of Cacoscelis being either decidedly appendiculate or else armed 
with a second inner tooth. 
