624 Mr. Blackwall's Descriptions of new Species of Spiders. 



oi! rows, whose convexity is directed backwards; the lateral eyes are the 

 largest, and the intermediate ones of the anterior row the smallest of the 

 eight. Abdomen soot-coloured, thickly covered with hairs, short, rather 

 larger at the posterior than the anterior extremity, convex above, pro- 

 jecting a little over the base of the cephalo-thorax. Spinners brown; the 

 superior pair, which is much longer than the rest, and triarticulate, has 

 the spinning-tubes arranged along the inferior surface of the terminal 

 joint. Sexual organs prominent, and dark reddish brown. Plates of the 

 spiracles pale yellow. 



About midsummer, individuals of this species may be seen on rails and 

 gates in pastures near Llanrwst in considerable numbers, but they are all 

 females. The only male which has come under my observation was found 

 beneath a stone imbedded in earth, in the autumn of 1837. It bore a close 

 resemblance to the other sex, but escaped from me before I had an opportu- 

 nity of describing the structure of the palpal organs, which were completely 

 developed. 



12, ^gelena celans. Cephalo-thorace saturate brunneo lateribus fasciaque 

 mediana flavescenti-brunneis ; oculis seriei anterioris intermediis omnium 

 mult6 minimis ; mandibulis maxillis labio pedibus palpisque rufo-brun- 

 neis ; abdomine saturate brunneo rufescenti et flavescenti tincto, fascia 

 mediana obscura dentata rufescenti-brunnea. 



Length of the female ^th of an inch; length of cephalo-thorax ^a ; breadth 

 xs ; breadth of abdomen xi ; length of a posterior leg -rs ; length of a 

 leg of the third pair -^. 



Anterior part of the cephalo-thorax slightly compressed ; sides depressed, 

 marked with furrows diverging from the upper part to the margins ; in 

 the medial line of the posterior region there is a narrow indentation ; it 

 is hairy, and of a very dark brown colour, with yellowish brown lateral 

 margins, and a band of the same hue extending along the middle. Eyes 

 disposed on the fore-part of the cephalo-thorax in two transverse, curved, 

 nearly parallel rows, whose convexity is directed backwards ; the lateral 

 eyes are the largest, and the intermediate ones of the anterior row much 



