Page:Supplement to harvesting ants and trap-door spiders (IA supplementtoharv00mogg).pdf/141

 the eyes, yet we must be prepared to find exceptions to the rule derived from the most exact measurements in any individual instance.

In the present species the above conclusions, as to position and size, are drawn from a consideration and comparison of 20 examples, and are, it is believed, pretty true, but yet in one example, one of the hind central eyes was but half the size of the other, and in another example one of the same eyes was but one-fourth of that of the other, a mere dot in fact, and the relative size of the respective lateral eyes of the two rows do not appear to maintain exactly the same proportions in all individuals. The height of the clypeus appeared to be as nearly as possible half that of the facial space.

The legs are strong, moderately long, their relative length 4, 1, 2, 3, though in some examples those of the second and third pairs are equal in length; in others, those of the third pair are slightly longer than those of the second; here again, as with the eyes, although the relative proportion of the legs of spiders is an important specific point, and in general tolerably reliable, yet accurate observation and measurements prove that there are small differences in individual instances. The legs are yellow-brown in colour, furnished with hairs, bristles, and a few spines. The outer sides of the genual joints of the third pair are destitute of spines; in two instances only out of 20, this joint had a single, not very conspicuous, spine. The superior tarsal claws have 4-5 minute pectinations underneath near their base.

The palpi are moderately long and strong, and