Page:Supplement to harvesting ants and trap-door spiders (IA supplementtoharv00mogg).pdf/164

 fore-centrals are wider apart than each is from its fore-lateral. I have also noted a similar difference in regard to N. Manderstjernæ. The fore-centrals are also smaller in the female than in the male.

The two species, although bearing such great general similarity to each other, may be at once distinguished by several very tangible differences. First in regard to the male. The cephalothorax of N. meridionalis has the whole caput of an almost uniform dark brown colour, two slender yellow lines beginning, one a little way behind each lateral pair of eyes, and converging rather quickly towards each other, run on nearly parallel, but in close proximity together to the thoracic fovea. The centre of the thorax is also dark brown, the brown portion formed by radiating confluent patches, rather than by distinct lines as in Manderstjernæ. The curve of the thoracic fovea is sharp, in fact more in the form of a straight line with the ends bent down.

The cephalothorax is of nearly one uniform level and convexity above; the caput being a little more rounded than the thorax; the eye eminence seemed to be rather higher than in N. Manderstjernæ, and the clypeus, which is steepish, is impressed in the middle and exceeds in height half that of the facial space; on the lower margin of the clypeus is a transverse row of several strong prominent bristles. There were no bristles behind the eyes, and no appearance of any having been broken off there (the female, however, has a single longitudinal row on the caput). The lateral and hinder margins of the cephalothorax, however, are, in the male (but not in the female) clothed with black bristles and bristly hairs.