226 INSECTA. 
C. annulata, Fab. Found in the nests of the Vespa nidulans 
of South America, and mistaken by Reaumur—Insect., VI, xx, 
2, and xxi, 3, 4—for the female of that Wasp. It is black; point 
of the abdomen elongated; a white dot at the extremity of the 
posterior thighs; tibize white, picked in with white *. n 
There the abdomon seems as if applied to the posterior extremity 
of the metathorax, or as if sessile; it is rounded or very obtuse at the 
end, and compressed laterally. The ovipositor curves over the 
back. The wings are doubled, and the superior ones present a radial 
cell. 
Levcospis, Fab. 
L. dorsigera, Fab., the female; L. dispar, the male; Panz., 
Faun. Insect. Germ., LVIII, 15, the male. Black; abdomen 
almost twice the length of the thorax, with three yellow bands 
and two little spots of the same colour. The female deposits her 
eggs in the nest of the Abei/les Maconnes of Reaumur. 
That of another species—L. gigas—lays in Wasps’ nests f. 
The others, in several of which the antennz consists of but from 
five to nine joints, have the posterior thighs oblong, and their tibize 
straight. 
Of those in which the antenne, always simple in both sexes, are 
composed of from nine to twelve joints, we will first distinguish 
Evucuaris, Lat. /ab.—Cuatsis, Jur. 
The only ones of this tribe in which those organs are straight or 
non-geniculate. The abdomen is pediculated. I could find no ves- 
tiges of palpi in several individuals submitted to my inspection fe 
Tuoracanta, Lat. 
These Insects, collected in Brazil by M. de Saint-Hilaire, by the 
prolongation of their scutellum, which covers the wings, represent 
in Europe those Hemiptera called Scutellera by M: Dela..arck. 
The other subgenera with antenne still consisting of at least nine 
simple joints, but which are geniculate, and in which the wings are 
not covered by the scutellum, may be divided into those where these 
antenne are inserted near the middle of the anterior face of the head, 
or considerably distant from the mouth, and into those where they 
are inserted close to it. 
In those where they are removed from it, some have almost an 
ovoidal abdomen, compressed on the sides, or higher than it 1s wide, 
and a usually salient and ascending ovipusitor. Such are those which 
form the 
Acaon, Daim. 
‘They are very remarkable for the magnitude and length of their 
head, and for their antenne, of which the first joint is very large, and 
* See Lat., Gen. Crust. et Insect., IV, p. 25; Fab. Syst. Piez.; Oliv., Encyc. 
Méthod., article Chalcis. 
t See the same works and the Monograph of this genus by Kliig, in the Mem. 
Nat. Cur. of Berlin. Swammerdam appears to have known one of these species. 
t Lat, Gener. Crust et Insect., IV, 20. = 
