CYRTODISCA.—ONCOMETOPIA. 227 
Nicaragua, Chontales (Janson); Costa Rica (Van Patten & Van Volxem), Volcan de 
Trazu 6000-7000 feet (Rogers) ; Panama (Boucard), Volcan de Chiriqui (Champion). 
The usual colour of this insect in collections is a uniform lighter or darker fuscous 
or reddish-brown, but lighter specimens occur with the front parts finely mottled 
and the anterior margins of the tegmina dark: it is probable that the colour fades 
considerably after death, as traces of the mottling are found on most of the fresher 
specimens; at all events, these lighter examples appear at most to be a variety. 
A fresh and brightly-coloured specimen from Tierra Colorada is figured. 
ONCOMETOPIA. 
Oncometopia, Stal, Kongl. Svensk. Vet.-Ak. Handl. Band viii. no. 1 (Hemipt. Fabr. ii.), p. 60, 
nota (1869). 
Proconia, Amyot et Serville, Hist. des Ins. Hémipt. p. 571 (1843) [nec Lepeletier et Serville, Encycl. 
Méthod. x. pp. 610, 611 (1825) ]. 
This genus is characterized by having the head short, usually simply rounded in 
front, and never distinctly produced in an isosceles triangle, as in Phera; the vertex in 
the majority of the species is without any trace of a furrow, and, at most, there is a 
small and very inconspicuous longitudinal impressed line at the base; the head, viewed 
from the side, is thick and rounded, and convex beneath, and the anterior tibie are 
sulcate. The species are large or moderate-sized, sombre-coloured insects, and they 
have been usually referred to Proconia, but Lepeletier and Serville’s types of their 
two divisions of this genus are respectively Tettigonia cristata (Fabr.) and T. excavata, 
Lep. et Serv.; the latter is a well-known and very variable Brazilian species, which 
has the vertex produced in an elongate triangle and deeply and broadly furrowed, and 
the anterior tibiz dilated and not sulcate. The two veins of the clavus are variable, 
being either distinct and subparallel, or closely approaching one another, or else 
coalescing into one thick vein, which divides into two for a longer or shorter space at 
the base and apex. 
1. Oncometopia rubiginosa. 
Tettigonia rubiginosa, Sign. Ann. Soc. Ent. Fr. 1854, p. 491, t. 17. fig. 7’. 
Proconia rubiginosa, Walk. List of Homopt. Ins., Suppl. p. 2267. 
Hab. Mexico? (coll. Signoret', in Mus. Vind. Ces.). 
In general appearance this species much resembles Cyrtodisca major, but may 
easily be known from it by the more prominent eyes and the general shape of the 
head, as well as by the obscure fuscous markings on the tegmina. Stal, apparently 
accidentally, has omitted the species from his “ Hemiptera Mexicana” (Stett. ent. 
Zeit. xxv. pp. 49-86). . 
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