COLEOPTERA. 
69 
Independently of these variations the species differ considerably 
among themselves in the structure of the antennae, especially in the males; 
and no doubt they would present in these modifications, combined with 
the differences indicated above, sufficient characters for the establish¬ 
ment of distinct genera, but the small number of the hitherto known 
species allows their provisional reunion under the same group, which, 
nevertheless, is more homogenous than many others in Entomology. I, 
therefore, merely propose at the present time the following divisions, for 
their easier distinction and natural connexion. 
I. Antenna $ medium elytrorum, 5 medium thoracis, paullo super- 
antes, tenues, subfiliformes, articulis cylindricis, apice paullo cla- 
vatis,— clava S valde elongato-acuta, articulis lo et 3o (ultimo) 
subaequalibus, £ latiuscula, paullo compressa, oblongo-acuta, 
articulis lo et 3o subaequalibus. Thorax latiusculus, medio late- 
libus sat rotundato-ampliatis, latitudine media haud longior, 
mox pone apicem transversim profunde, ante basin late modiceque 
impressus, carina postica medio late interrupta, versus medium 
latemm valde oblique antrorsum ducta, turn usque ante apicem 
subrectim excurrente. Elytra subparallela, dorso late deplanata, 
mox ante apicem callo intra-laterali duplicato instructa, pone calo 
lum longe subperpendiculariter, h. e. parutn oblique declivia, 
apice conjunctim subangulariter emarginata, angulo suturali 
acuto, haud spiniformi. Processus scutellaris mesosterni inter 
coxas intermedias carina obtuse angulata instructus.— Tribo- 
tropis pr. diet. A rpifico, tero, carina. 
Typus: Phlceotragus prasinatus , Sch. 1 (nec hue usque plures species 
vidi). 
Obs. —Yery close, as already observed, to Hypselotropis annulicornis , 
in coloration and general shape, but each of the elytra has considerably in 
front of the apex a duplicate callosity, the external division of which 
is very slightly within the sides of the upper part; and the posterior part of 
the elytra, being subperpendicularly cut behind this callosity, these seem 
1 Ptychoderes bicallosus , Blanchard, Voy. Amer. Mer. d’Orbigny, 
1837-43, p. 200, No. 635, pi. xvi. fig. 1, is nothing but this species 
(Tribotropis prasinatus , Jekel). 
