398 ATTEMPTED DIVISION OF BRITISH INSECTS. 



feeler ; eyes large, hemispherical, granulated, and distant ; ocelli 

 none ; head broader than long ; prothorax very short ; meso- 

 thorax very large; fore-wings ample, folded longitudinally; 

 alulae none ; before these are two patagia or tippets, similar to 

 those of Lepidoptera, being naked, pedunculate processes, which 

 the insect can move rapidly at pleasure ; hind-wings obsolete ; 

 tarsi five-jointed. (Xenos.) Stylops, Elenchus, Halictophagus. 



Division II. — Tetraptera Necromorpha. 



Larva bearing no resemblance to the imago. Pupa per- 

 fectly quiescent, having the organs of locomotion and mandu- 

 cation confined by a shell-like skin ; yet displaying all the 

 limbs and organs, placed in order by the sides of the body, 

 and detached from it, except at the usual points of connexion. 



Class III. — Hymenoptera. 



Larva with small corneous mandibles, moving horizontally ; 

 in one stirps, with six articulate, and twelve to sixteen pre- 

 hensile, feet; in the remaining stirps, without feet. Feeds 

 on a composition provided by the imago (Stirps I. and III.) ; 

 the putrefying bodies of other insects (Stirps II.); honey and 

 pollen (Stirps IV.) ; the fleshy parts of living insects (Stirps V.) ; 

 the wood of dead trees (Stirps VI.); or the leaves of living 

 vegetables (Stirps VII.) Imago, with the mandibles strong, 

 moving horizontally, and masticatory ; the other organs of the 

 mouth fully developed; three ocelli; wings all developed, the 

 fore- exceeding the hind-wings in size, membranaceous, and 

 used in flying ; the mesothorax largely developed at the expense 

 of the pro- and metathorax ; the podeon mostly restricted; the 

 tarsi five-jointed. Food very various. 



Stirps. — Formicina, Ants. 



Natural Order. — Formicites, Social Ants. 



Larva an inactive, obese, voracious maggot, residing entirely in the 

 earth, and dependant for food on the care of the perfect insects. 

 Pupa changes in a tough leathery cocoon ; these cocoons are 

 commonly known as " ants' eggs." Imago, with the antennas, 

 composed of about thirteen joints, often elbowed, slightly in- 

 crassated exteriorly ; mandibles somewhat triangular, toothed ; 

 maxillae obtuse ; labium short, obtuse, its ligula not produced ; 



