102 HEMIPTERA-HOMOPTERA. 
1. Parantonaé dipteroides, sp.n. (Tab. VII. figg. 10, 10 a.) 
Nigra, nitida, sparsim nigro-pilosa, diffuse punctata, spina posteriori brevi, flava, apice extremo nigro ; tegmin- 
ibus testaceo-hyalinis, ad basin late brunneis, opacis; pedibus testaceis, femoribus tibiisque ad basin 
nigricantibus. 
Head and pronotum black, shining ; pronotum plainly but not thickly pilose, diffusely punctured, with the 
apical spine short, yellow, with the extreme apex black ; tegmina testaceo-hyaline, broadly brown at the 
base ; legs testaceous, with the femora and the base of the tibize more or less infuscate. 
Long. 63, cum tegm. et spina apicali 8 millim.; lat. max. pronoti antice 22 millim. ; id. postice 4} millim. 
Hab. Guatemata, Aceytuno 5100 feet (Salvin, in Mus. Brit.). 
This extraordinary species has the appearance of a large fly; in structure and colour 
it is allied to Antonaé incrassata, but it is very distinct from that species, and I have 
not seen any insect like it. 
CERESA. 
Ceresa, Amyot et Serville, Hist. Nat. des Ins., Hémipt. p. 539 (1843) ; Stal, Ofv. Kongl. Vet.-Ak. 
Forh. xxvi. p. 245 (1869). . 
The species belonging to this genus appear to be confined to America, and to range 
from as far north as Nova Scotia to Monte Video and Buenos Ayres; several have 
- been described from the United States, and upwards of a dozen from Brazil. From 
thirty to forty species in all appear to have been recorded, some of which are very 
distinct, while others can scarcely be regarded as separate, and are very difficult to 
distinguish ; several appear to have been described from single specimens on characters 
which are obviously variable, if a series is examined. 
The species are distinguished by their reticulate tegmina, which are almost entirely 
exposed and have five apical and three discoidal areas, and by their general form, as 
well as by the elongate styles of the male. 
The species may roughly be divided into two groups, in one of which the pronotal 
horns are slender and recurved, and in the other they are stouter, and not or scarcely 
recurved ; there are, however, certain intermediate forms. 
The most abundant member of the genus is Ceresa bubalus (Fabr.), which has a very 
wide range in North America, but does not occur further south than the United States ; 
it has been recorded by Hellman and Riley as doing injury to potatoes (Am. Nat. xvi. 
pp. 822, 823). In Central and South America C. bubalus appears to be replaced by 
C. vitulus. 
1. Ceresa vitulus. 
Centrotus vitulus, Fabr. Syst. Rhyn. p. 20°. 
Ceresa vitulus, Am. et Serv. Hist. Nat. des Ins., Hémipt. p. 540°. 
Smilia pallens, Germ. Rev. Ent. Silb. iii. p. 235 (18385) °. 
Ceresa spinifera, Fairm. Ann. Soc. Ent. Fr. sér. 2, iv. p. 2844. 
Ceresa curvilinea, Walk. List of Homopt. Ins., Suppl. p. 182°. 
Ceresa excisa, Walk. Insect. Saunders., Homopt. p. 68 °. 
