and rare British Spiders. 247 



Erigone Douglasi, sp. n. PI. VIII. fig. 5. 



Adult female, length 1-i- line. 



The cephalothorax, falces, and maxilke of this spider are yel- 

 low, the occiput, as well as the spaces between the normal 

 grooves and furrows, being suffused with dusky black, and the 

 thoracic margin black. 



The form of the cephalothorax is of the ordinary type ; the 

 lateral constrictions at the caput are slight, and the whole pro- 

 file outline forms a tolerably even curve from the clypeus to 

 the end of the hinder slope. 



The eyes are rather small, but in the usual position, forming 

 a rather narrow, transverse oval figure, and are seated on 

 strong, slightly tuberculate, black spots ; those of the hinder 

 row appear to be of the same size, and are separated from each 

 other by equal intervals of an eye's diameter ; those of the fore 

 central pair are the smallest of the eight, dark-coloured, con- 

 tiguous to each other, and each is separated by a diameter's in- 

 terval from the fore lateral on its side. Each of the hind central 

 eyes is separated from the fore central eye nearest to it by an 

 interval rather greater than the diameter of the former ; those 

 of each lateral pair are contiguous to each other and placed 

 obliquely. The height of the clypeus slightly exceeds half that 

 of the facial space ; it is rather strongly impressed immediately 

 below the eyes, but projects at its lower margin. 



The legs are long and tolerably strong; their relative length 

 is 1, 4, 2, 3 ; they are of a pale yellow colour, and are furnished 

 with hairs, bristles, and a very few long slender spines. 



The palpi are similar in colour and armature to the legs. 



The falces are strong and tolerably long, a little inclined 

 backwards, and armed with a few minute teeth on their inner 

 edges towards the extremity. 



The sternum is small, of the usual heart-shape, and strongly 

 suffused with greenish black. 



The abdomen is oval, strongly convex above, and its profile 

 line is abruptly curved at the hinder part ; its upper part and 

 sides are of a dull greenish black colour, the central longitudinal 

 line being darkest 5 two thirds of its upperside (towards the 

 hinder part) are marked with a series of tolerably distinct pale 

 yellowish oblique spots or patches in pairs, the first pair being 

 the largest and of an oval shape, the next less in size but more 

 elongated, the rest being simply transverse angular bars or 

 chevrons ; the under part is dull pale yellowish, with a broad 

 central, longitudinal, black band enclosing the spinners and 

 reaching to the genital aperture ; it is bordered by a whitish 

 line, and its shape is that of an elongated lyre. 



