CERESA. 103 
Hab. Mexico (Bilimek); Guaremata, El Reposo (Champion) ; Costa Rica, Volcan de 
Irazu 6000 to 7000 feet (Rogers); Panama, Volcan de Chiriqui (Champion).--SoutH 
AMERICA °°, Venezuela®, Cayenne 2, Brazil4, Rio Negro ®, Rio Janeiro. 
This insect is variable in size and colour, being sometimes bright orange-testaceous 
and often greenish ; the shape of the horns, too, is somewhat variable, but they are 
always sharp and recurved in the type-form. 
Var. minor. 
Minor, virescens, capite et metopidio ad partem flavo, carina dorsali cornibusque plus minusve rufis; 
cornibus interdum curtis, brevissimis. 
Smaller, of a greenish tint, with the head and more or less of the metopidium yellow, and with the dorsal 
carina and the horns more or less red, occasionally testaceous. 
Long. 54-63 millim.; lat. int. corn. 3-4 millim. 
Hab. Mexico, Teapa in Tabasco (H. H. Smith), Temax in North Yucatan (Gawmer). 
A considerable series from Teapa, showing very little variation, and a small series 
from Yucatan, with the pronotal horns almost wanting in several specimens. 
In the Vienna Museum there are three specimens labelled C. vitulus, which do not 
belong to that species, but are apparently small C. testacea ; the description, as given 
by Germar, Fairmaire, and others, renders it plain that the real C. vitulus cannot 
belong to the C. testacea-group. Germar’s description of Smilia pallens, which he 
quotes as identical with Fabricius’s insect, is as follows:—‘ Testacea, stethidio antice 
convexo, utrinque in cornu horizontale apice reverso producto, dorso compresso, 
margine laterali lineolaque semicirculari albidis.” | 
Among the insects in the Vienna Museum labelled ‘Coll. Signoret” are two speci- 
mens of a Ceresa from Mexico, labelled * meaicana, det. Stal” (apparently a MSS. name) ; 
they are very pale and rather strongly punctured, one having rather long recurved 
horns and the other scarcely any horns at all. In our collection there are two speci- 
mens which answer almost exactly to these, from Chilpancingo, Guerrero, and Cahabon, 
Vera Paz, respectively; both, however, appear to be forms of the var. minor of 
C. vitulus, which seems to be an extremely variable insect, and will probably be found 
to lead up to other species which have usually been regarded as distinct. 
2. Ceresa sallei. 
Ceresa salléi, Stal, Stett. ent. Zeit. 1864, p. 70’. 
Hab. MExico (coll. Signoret}, in Mus. Vind. Ces.). 
This species is like a large C. vitwlus, with the pronotal horns longer and stouter in 
proportion; apart from its size, it might be classed with some of the forms of that 
_ insect; it has apparently been described on a single specimen. 
