4 Proceedings of the Royal Irish Academy. 



wards ; the sides are marked with oblique lines composed of short 

 hrown streaks, and there is a triangular spot of a similar colour 

 directly above the coccyx ; a minute brown spot is situated immedi- 

 ately before the spinners on the under part, and the sexual organs, 

 which are well developed, are of a dull reddish-brown colour. 



The male bears a general resemblance to the female, but differs 

 from her in various particulars. Its cephalothorax, which is darker 

 coloured, has a patch of hairs before the medial depression, a smaller 

 one behind each large anterior eye, and a broad band curved from its 

 anterior margin across the middle of the posterior slope ; these 

 patches and the band have a white hue, and there are a few long black 

 bristles situated below the small intermediate eye of each lateral row. 

 The large anterior eyes are of a bright green hue, and are encircled 

 by short white hairs. The falces have some white hairs at their base, 

 and with the base of the maxillae and lip are of a brown-red colour. 

 The extremity of the femora, the genua, and the tibiae of the first and 

 second pairs of legs are of a red-brown colour, the inferior surface 

 being the darkest ; and the third and fourth pairs are marked with 

 annuli of the same hue. The radial joint of the palpi is smaller than 

 the cubital, and has a pointed adophysis directed forwards from the 

 outer side of its extremity. The digital joint is oval, hairy, convex 

 above, and comprises in its concavity the palpal organs, which are 

 moderately developed, not very complex in structure, with a pointed 

 spine curved round their extremity from the inner to the outer side, 

 and are of a reddish-brown colour. The abdomen is slender, and the 

 irregular brown band that extends along each side of the upper part in 

 the female is usually more or less broken into spots in the male, and 

 the superior spinners have a brown streak on their upper surface. 



Saltious activus, n. sp. [Heliophanus, C. L. Koch]. Plate 1, fig. 3. 



Length of the female (not including the spinners), -^-th of an inch; 

 length of the cephalothorax, ^V ; breadth, ^V ; breadth of the abdo- 

 men, -re ; length of a posterior leg of the second pair, -rif • 



The minute intermediate eye of each lateral row is nearly equi- 

 distant from the eyes constituting its extremities. The cephalothorax 

 is convex, glossy, somewhat quadrilateral, with a slight indentation 

 in the middle, and is provided with short whitish hairs ; it slopes 

 gradually towards the front, abruptly at the base, and its predomi- 

 nant colour is red-brown ; the cephalic region has a dark-brown hue, 

 and a line of white hairs extends along each side above the lateral 

 margin. The falces are short, subconical, A'ertical, and armed with 

 one or two small teeth at the extremity ; the maxillae are straight, 

 and enlarged and rounded at the extremity ; and the lip is ovaL 

 These organs are of a red-brown colour, the falces being the darkest, 

 and the extremities of the maxillae and lip the palest ; the sternum is 

 oval and rather broader at the posterior than at the anterior extremity. 

 The legs are moderately strong, provided with hairs and spines, twa 

 parallel rows of the latter occurring on the inferior surface of the tibia; 



