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



The male is smaller and slenderer than the female, but the relative 

 length of his legs is the same ; their absolute length, however, is greater, 

 an anterior one measuring ^ths of an inch. He resembles the female in 

 design, but is darker coloured. The cephalo-thorax, mandibles, maxillae, 

 lip, and sternum, have a tinge of red, and the legs are without the green 

 tint perceptible on those of the other sex. Fourth joint of the palpi 

 much stronger than the third, a long, slender bristle projecting from 

 each, near the extremity, in front ; fifth joint oval, very dark brown, 

 convex and hairy externally, concave within, comprising the palpal or- 

 gans, which are prominent, highly developed, complicated in structure, 

 with a pointed, corneous spine, directed from the inner side obliquely 

 downwards, and a delicate, prominent membrane at the extremity ; their 

 colour is very dark reddish brown. 



In May and June Linyphia rubea spins a web of moderate extent in bushes, 

 and is of frequent occurrence in the woods of Denbighshire and Caernarvon- 

 shire. It has been captured by Miss Ellen Clayton in the north of Lancashire, 

 and by T. Glover, Esq. in the neighbourhood of Manchester. 



45. Linyphia insignis. Cephalo-thorace mandibulis maxillisque flavescenti-, 

 labio sternoque saturate, pedibus palpisque pallid^ flavescenti-brunneis ; 

 abdomine obscur^ flavo, lineis transversis medianis angularibus fascia- 

 que utrinque longitudinali nigricantibus. 



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

 ^ ; breadth of abdomen -^^ ; length of an anterior leg -j^ ; length of a 

 leg of the third pair \. 



Cephalo-thorax oval, convex above, glossy, with some slight furrows on the 

 sides, and a large indentation in the medial line of the posterior region ; 

 its colour is yellowish brown, the margins being the darkest. Mandibles 

 powerful, conical, vertical, and armed with a few teeth on the inner sur- 

 face. Maxillse straight, and somewhat quadrate.- These organs resemble 

 the cephalo-thorax in colour, but are rather darker. Lip semicircular 

 and prominent at the extremity. Sternum heart-shaped. These parts 

 are dark brown, the lip being paler at the tip. Legs and palpi long, 



