Lastly—for this must be the last example—we have a species—_Astia vittata_—in which the male is represented by two differing forms, each of which dances before the female in its own particular way. One of these forms is red, like the female, which he resembles in other respects, so that this must be taken as the original specific type. The other, which has evidently been developed from it, in deference to the æsthetic preferences of the female, is black, with the special adornment of three tufts of hair on his head, or thereabouts, that part of a spider which is termed the cephalothorax. These tufts stick bolt upright, rising together, but separating about half-way up, and give to their fortunate possessor—for, as we shall see, he is fortunate—a very spruce and dapper appearance. Looked at dispassionately, if one can do that, they are certainly as handsome as moustaches, and there is no reason in the nature of things why they should not be admired as much. So, indeed, they are, and that the admiration bestowed upon each is of an equally high nature I, at any rate, see no reason to doubt. The following description will show what a spider with moustaches can achieve: “The _vittata_ form, which is quite like the female, when he approaches her raises his first legs either so that they point forward or upward, keeping his palpi stiffly outstretched, while the tip of his abdomen is bent to the ground. This position he commonly takes when three or four inches away. While he retains this attitude he keeps curving and waving his legs in a very curious manner. Frequently he raises only one of the legs of the first pair, running all the time from side to side. As he draws nearer to the female he lowers his body to the ground, and, dropping his legs also, places the two anterior pairs so that the tips touch in front, the proximal joints being turned almost at a right angle to the body. Now he glides in a semicircle before the female, sometimes advancing, sometimes receding, until at last she accepts his addresses. The _niger_ form, evidently a later development, is much the more lively of the two, and whenever the two varieties were seen to compete for a female the black one was successful.”[133]