INSECTA. 359 



Sub-genera : Nomia Halictus, Sphecodes, Dasypoda, Andrerta 

 LATE. 



Hylceus LATR, (not FABR.), Prosopis FABR., JURINE, LEPELET. 

 Ligula dilated at apex, sub-emarginate. Cubital cells two. Body 

 smooth. 



Sp. Hylceus annulatus, Apis annulata L., Sphex signala PANZER DeutscJd. 

 Ins. Heft 53, Tab. 2 ; Cuv. R. ani. ed. ill, Ins. PI. 125, fig. i &c. 



Colletes LATR. Ligula emarginate, with lobes divaricate (cor- 

 date). Cubital cells three. Body hirsute. 



Sp. Collates fodiens, PANZER, Deutschl. Ins. Heft 105, Tab. 21, 22, &C. 1 



Family XV. Diplopteryga. All the individuals winged. 

 Anterior wings longitudinally duplicate, the insect being at rest. 

 First joint of posterior tarsi not dilated. Eyes emarginate (reni- 

 form). Antennae 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 2 ; hence the name 

 Diploptera (double-winged), which KIRBY, because the termination 

 ptera denotes the names of orders of insects, changed into Dip- 

 lopteryga (J. RICHARDSON, Fauna oreali-Americana, iv. 1837, 

 p. 263). 



The wasps are mostly coloured yellow or red and black. The 

 pupae 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. Antennae with only eight distinct joints, the rest 

 conjoined to form an obtuse or rounded club. Ligula with two 

 terminal lacinias, received in the tubular base. Cubital cells only 

 two complete. 



1 Comp. Entomologica, auctore J. IMHOFF, OKEN'S Isis, 1832. s. 1198 1208; de- 

 scriptions of species of the genera Colletes, Hylceus 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. not. dcs Hymenopteres, n. p. 590. 



