INSECTA. 359 
Sub-genera: Momia Halictus, Sphecodes, Dasypoda, Andrena 
Latr. 
Hyleus Late. (not Fasr.), Prosopis Fasr., JuRINE, LEPELET. 
Ligula dilated at apex, sub-emarginate. Cubital cells two. Body 
smooth. 
Sp. Hyleus annulatus, Apis annulata L., Sphex signata Panzer Deutsch. 
Ins. Heft 53, Tab. 2; Cuv. R. ant. éd. ill., Ins. Pl. 125, fig. 1 &e. 
Colletes LatR. Ligula emarginate, with lobes divaricate (cor- 
date). Cubital cells three. Body hirsute. 
Sp. Colletes fodiens, PANzER, Deutschl. Ins. Heft 105, Tab. 21, 22, &c.} 
Family XV. Dzéplopteryga. All the individuals winged. 
Anterior wings longitudinally duplicate, the insect being at rest. 
First jomt of posterior tarsi not dilated. Eyes emarginate (reni- 
form). Antenne filiform or thicker towards the apex. Prothorax 
produced laterally as far as the the origin of the posterior wings. 
Body smooth. Females and neuters armed with a strong poisonous 
sting. : 
Wasps. The inner edge of the upper wings is turned down so 
that their upper surface lies on the under wings*; hence the name 
Diploptera (double-winged), which Kirpy, because the termination 
ptera denotes the names of orders of insects, changed into Dip- 
lopteryga (J. Ricuarpson, Fawna Boreali-Americana, tv. 1837, 
p. 263). 
The wasps are mostly coloured yellow or red and black. The 
pupe are vermiform, and without feet. They are inclosed in sepa- 
rate cells, where they find food placed by the mother with the egg 
she has laid, or are fed daily by the mother or by the sterile 
working-wasps. 
Phalanx I. Antenne with only eight distinct joints, the rest 
conjoined to form an obtuse or rounded club. Ligula with two 
terminal lacinix, received in the tubular base. Cubital cells only 
two complete. 
1 Comp. Entomologica, wuctore J. IMHOFF, OKEN’S Jsis, 1832. s. 1198—1208; de- 
scriptions of species of the genera Colletes, Hyleus and Andrena, with remarks on the 
synonymy. 
2 The genus Ceramius seems to be the only exception to this, which however is 
denied by LEPELETIER, Hist. nat. des Hyménopteres, 11. p. 590. 
