18 ;Mr. J. Blackwall on newly discovered species 0/ Araneidea. 



form, thinly clothed with hairs, convex above, projecting over 

 the base of the cephalo-thorax ; it is of a dull olive-green colour, 

 with a series of obscure, pale yellowish brown, oblique streaks 

 on each side of the medial line of the upper part, and a band of 

 the same hue extending along each side ; a large, prominent, red- 

 brown process, connected with the anterior margin of the sexual 

 organs, is directed backwards ; and the colour of the branchial 

 opercula is pale yellow. 



The sexes are similar in colour, but the abdomen of the male 

 is slenderer than that of the female, and its maxillse are slightly 

 inclined towards the lip. The cubital and radial joints of the 

 jialpi are short, the latter being most produced at its extremiity, 

 on the inner side ; the digital joint is somewhat oval, with a 

 large lobe on the outer side ; it is convex and hairy externally, 

 concave within, comprising the palpal organs, which are highly 

 developed, prominent, complex in structure, with a large process 

 at their base consisting of three parts ; the superior one, which 

 is curved at its extremity, is in contact wdth the radial joint, on 

 the outer side, and the other two are directed downwards, the 

 one which is situated nearer to the inner side and is the slenderer 

 and more curved having a projection on the outside of its cur- 

 vature and another within, nearer to its base ; a short, promi- 

 nent, curved process, whose point is in contact with a small, 

 semitransparent membrane, occurs at the extremity of these 

 organs, and their colour is red-brown of various shades. The 

 convex sides of the digital joints are directed towards each 

 other. 



I have much pleasure in naming this species after R. H. INIeade, 

 Esq., of Bradford, in Yorkshire ; a naturalist to whose kindness 

 I am indebted for opportunities of describing several newly dis- 

 covered indigenous spiders, and of examinmg numerous inter- 

 esting specimens of Araneidea, both British and foreign. 



Early in May 1852, adult individuals of both sexes of Linyphia 

 Meadii were taken by Mr. Meade under a stone in a pasture at 

 Low Moor, near Bradford. 



Linyphia unthracina. 



Length (jf the female ^th of an inch ; length of the cephalo- 

 thorax 2^Q ; breadth ^'-^ ; breadth of the abdomen y'^ ; length of 

 an anterior leg \ ; length of a leg of the third pair /y. 



Cephalo-thorax oval, convex, glossy, with an indentation in 

 the medial line : falces powerful, conical, armed with a few teeth 

 on the inner surface, and inclined towards the sternum, which is 

 heart-shaped, convex and glossy : maxillae straight, with the ex- 

 terior angle, at the extremity, curvilinear : lip semicircular and 



