Sixthly, at the under part of the face FF, were several of the former sort of bended Brisles, and below all, the mouth, out of the middle of which, grew the _proboscis_ GHI, which, by means of several joints, whereof it seem’d to consist, the Fly was able to move to and fro, and thrust it in and out as it pleas’d; the end of this hollow body (which was all over cover’d with small short hairs or brisles) was, as ’twere, bent at H, and the outer or formost side of the bended part HI, slit, as it were, into two chaps, HI, HI, all the outside of which where cover’d with hairs, and pretty large brisles; these he could, like two chaps, very readily open and shut, and when he seem’d to suck any thing from the surface of a body, he would spread abroad those chaps, and apply the hollow part of them very close to it. From either side of the _Proboscis_, within the mouth, grew two other small horns, or fingers, KK, which were hairy, but small in this Figure; but of another shape, and bigger in proportion, in the 24. _Scheme_, where they are marked with GG, which two indeed seem’d a kind of smellers, but whether so or not, I cannot positively determine. The _Thorax_ or middle part of this Fly, was cas’d, both above and beneath, with a very firm crust of armour, the upper part more round, and covered over with long _conical_ brisles, all whose ends pointed backwards; out of the hinder and under part of this grew out in a cluster six leggs, three of which are apparent in the Figure, the other three were hid by the body plac’d in that posture. The leggs were all much of the same make, being all of them cover’d with a strong hairy scale or shel, just like the legs of a Crab or Lobster, and the contrivance of the joints seem’d much the same, each legg seem’d made up of eight parts, 1, 2, 3, 4, 5, 6, 7, 8, to the eighth or last of which, grew the soles and claws, described before in the 38. _Observation_. Out of the upper part of this trunk grew the two wings, which I mention’d in the 38. _Observation_, consisting of a film, extended on certain small stiff wires or bones: these in a blue Fly, were much longer then the body, but in other kind of Flies they are of very differing proportions to the body. These films, in many Flies, were so thin, that, like several other plated bodies (mention’d in the ninth _Observation_) they afforded all varieties of fantastical or transient colours (the reason of which I have here endeavoured to explain) they seem’d to receive their nourishment from the stalks or wires, which seem’d to be hollow, and neer the upper part of the wing LL several of them seem’d jointed, the shape of which will sufficiently appear by the black lines in the second Figure of the 26. _Scheme_, which is a delineation of one of those wings expanded directly to the eyes.