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. The _palpi_ are longer than in _Manderstjernæ_. The radial joints have, at the upper fore extremity of each, five spines, _three_ in front in a transverse line, and _two_ immediately behind them. The palpal bulb is more globular, and the spiny production, which is not very long, springs from it more suddenly, and is _strongly sinuous_, its sharp tapering point directed outwards. The strong sinuosity of this part distinguishes it at once both from _N. Manderstjernæ_ and all other known European males with a simple point to the palpal organs. The _legs_ are longish and strong; their relative length 4-1, 3, 2 (male); 4-1, 2, 3 (female); they are furnished with hairs, bristles, and spines. These do not appear to call for special notice, except that each genual joint of those of the third pair has two spines on its outer side in both sexes. The superior tarsal claws are denticulated, but the denticulations differ in number and strength, not only in the two sexes and in the different legs, but in some instances in the two superior claws of the same leg. The denticulations seemed to be more numerous in the female than in the male.