CERESA.—CENTROGONIA. 107 
semicircular lateral impressions very plain ; the horns are robust and not sharp and recurved, but formed 
as in the C, testacea-group ; abdomen and legs light testaceous. 
Long. cum tegm. 7 millim.; lat. int. corn. 3} millim. 
Hab. Mexico (Bilimek, in Mus. Vind. Ces.), Vera Cruz (H. H. Smith). 
One female from Vera Cruz, from which our figure is taken, and two males, both old 
and faded, in the Vienna Museum. This species, at first sight, resembles C. vitulus, 
var. minor, but is easily distinguished by the shape of the horns and the punctuation ; 
it belongs to the second group of the genus, with the horns robust and not recurved. 
There is a third specimen in the Vienna Museum, also labelled “ Mexico (Bilimek),” 
which closely resembles the other two which have been above referred to this species, 
but it has the horns a little longer and more porrect, and the forehead more concave; 
it appears to bear much the same relation to C. eoncinna that C. cavicornis bears to 
C. testacea, and may or may not be distinct. 
10. Ceresa puncticeps. 
Ceresa puncticeps, Stal, Stett. ent. Zeit. 1864, p. 70°. 
Hab. Mexico (coll. Signoret 1, in Mus. Vind. Ces.). 
It is impossible to identify this species, either from the description or from the 
single example on which it was described, which I have before me. The insect is very 
old and quite faded, and has both the horns broken, so that their original length 
cannot be ascertained. Stal himself compares it with C. (Stictocephala) uniformis, 
and, at first sight, with the horns broken, it superficially resembles specimens of that 
insect as they stand in collections; but on a closer examination the difference is 
obvious. 
CENTROGONIA. 
Centrogonia, Stal, Kongl. Sv. Vet.-Ak. Hand]. Band viii. 1, p. 24 (1869). 
The members of this genus are very closely allied to Ceresa, from which they appear 
to be hardly distinct, although in general appearance they more closely resemble 
Nassunia ; the genus was formed by Stal for the reception of Ceresa ciliata, Fairm., 
C. nasuta, Stal, and C. unguicularis. Stal, to the last of which the species below 
described appears to be closely related. | 
1. Centrogonia elegans, sp. n. (Tab. VII. figg. 16, 16 a.) 
Angustior, capite magno, subquadrato, testaceo, rufo-brunneo variegato, rugoso, oculis prominentibus; pronoto 
antice obscure rufo-brunneo testaceo-irrorato, postice dilutiori, processu postico rufo-brunneo annulato; 
cornibus acutis, deflexis; metopidio convexo, pubescenti, fortiter punctato, longitudinaliter rugoso; dorso 
fere recto, leviter carinato, in processum posticum elongatum tenuem extenso, lateribus haud fortiter 
impressis ; tegminibus hyalinis; pedibus dilute testaceis, tarsis apiceque tibiarum nigris. 
Rather a narrow and slender species, of a rufous-brown colour, in front variegated and irrorated with testa- 
ceous, the hinder part of the pronotum lighter testaceous, with the base of the long and slender posterior. 
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