THE VIPTERA 



1 25 



cent. Such are the fire-flies, the cucuyo of th< Wesl 



Indies, and i he glow-worm. 



A 



r x V : 



/ 'I 



Via. 159. — The earl] ion Souse fly. i. dorsal and /•'. side view 



of the larva; ■/, air-tubes; ra>, spiracle. < . the spiracle enlarged I '. bead ol 

 the Bame larva, enlarged; W, labrun '. mandibles; but, maxillae; af, 



antenna. B, a terminal spiracle much enlarged. £>, puparium; tp, spii 

 All the flgures much enlarj 



Order 13. Siphonaplera. — Fleas represent this group. 



Order 14. Diptera. — The co ion house-fly (Fig. 1 



is a type of this group, all the members of which have but 



Fig. 160.— Bot-fly of the ox ami its larva 



two wings, while the tongue is especially develop lap- 



ping up liquids. The common house-fly lives one day iu 



