IBIDION. 31 
some occurring in the Argentine Republic and as far south as Chili. The thighs are 
more abruptly clavate than in Hexoplon and Octoplon, and are unarmed at their apices. 
In many species the carine of the antennal joints and hind tibie are scarcely 
perceptible. 
The habits of the Zbidia and allies are nocturnal, the perfect insects being found in 
the daytime motionless, on trees, generally concealed in the folds of leaves. They 
abound most in the scanty woodlands on the margins of campo and savanna districts, 
_ the continuous luxuriant forests of humid lowlands having fewer species. They are 
not, as a rule, widely distributed; and as each limited area throughout Tropical 
America has many peculiar to it, the number of species is prodigious, and the number 
of individuals relatively small. On this account, and owing to their recondite habits, 
they are not common in collections. Few, however, have hitherto been recorded from 
Central America. | 
1. Ibidion griseicolle. (Tab. IV. fig. 17.) 
Ibidion griseicolle, Bates, Trans. Ent. Soc. Soc. 1872, p- 180. 
Hab. Nicaragua, Chontales (Belt, Janson). 
2. Ebidion carinicolle. (Tab. IV. fig. 7.) 
Ibidion carinicolle, Bates, loc. cit. p. 180. 
Hab, Nicaragua, Chontales (Belt). 
3. Ibidion nigrocinctum. (Tab. IV. fig. 9.) 
Heterachthes nigrocinctus, Bates, loc. cit. p. 182. 
Hab. Nicaracva, Chontales (Belt). 
The absence of carine from the antennal joints and tibie brings this species within 
the definition of Compsa, § Heterachthes, according to Lacordaire’s classification ; but its 
great resemblance to the majority of the species of Ibédion forbid its separation from 
that genus. 
4. Ibidion ditelum. (Tab. IV. fig. 10.) 
Heterachthes ditelus, Bates, loc. cit. p. 181. 
Hab. Nicaracua, Chontales (Belt). 
This species is also a Heterachthes according to Lacordaire’s definition. 
5. Ibidion virgulatum. 
Lineare, melleo-flavum, nitidum, pilis longis erectis vestitum ; elytris utrinque medio lineolis quatuor niger- 
rimis (anteriore retrorsum posteriore antrorsum obliquatis), interspatio flavo ; antennis carinatis, articulo 
quarto brevissimo; thorace disco elevato, levi, nudo ; elytris politis, apice truncatis, angulo exteriore 
longe spinoso. . 
Tong, 3 lin. ¢? 
