189

8. Asilus.   Asitus.

Mouth with a straight, horny, bivalve snout. 9. Boinbylius.   Buzz-fly.

Trunk taper, very long and sharp, between two horizontal valves, in which are contained stings or bristles.

10. IlippObosca.   Iiorsefly.

Antennn like a single hair. Mouth furnished with a bivalve, cylindric, obtuse, and shaking beak. Feet terms Aninated with several claws. Body flat, hard, and

scaly.

7th. Order, Aptera, containing the following
Genera:

1. Lepisma.   Lepisnia.

Legs six, formed for running. Palpi movable, Body scaly. Tail furnished with extended bristles.

Podura.   Springtail.

Antenu long, taper. Legs six, formed for run nilig. Eyes two, composed of eight small ones. Tail forked, formed for leaping, bent inward under the body.

.. Termes.   Terms.

Ant enn'e taper. Legs six, formed for running. Eyes two. Mouth with two jaws.

4. Pediculus.