and Systematic Arrangement of British Spiders. ]7 



meter; it is commonly attached to her spinners by fine lines, and 

 contains about 98 spherical eggs of a brown colour, not adherent 

 among themselves. 



112. Linyphia alticeps. 



Linyphia alticeps, Sund. Vet. Acad. Handl. 1832, p. 261. 



luteola, Blackvv. Lend, and Edinb. Phil. Mag. Third Series, 



vol. iii. p. 192 ; Research, in Zool. p. 390. 



The conclusion arrived at by Professor Sundevall, that Liny- 

 phia alticeps and Linyphia luteola are the same species, is per- 

 fectly correct (private letter) ; but M. Walckenaer is certainly 

 mistaken in regarding it as identical with his Argus cornutus 

 (Hist. Nat. des Insect. Apt. t. ii. p. 368), from which it differs 

 remarkably in structure, colour, habits and oeconomy. 



I have procured specimens of this interesting Linyphia in 

 Lancashire and Denbighshire, and Mr. R. H. Meade has taken it 

 in Yorkshire. The male has the palpal organs fully developed in 

 autumn, at which season both sexes are plentiful in the planta- 

 tions about Crumpsall Hall, near Manchester, constructing snares 

 of moderate extent among coarse grass beneath the trees. Like 

 other species of the genus, they are usually seen on the under 

 side of the horizontal sheet of web in an inverted position. 



113. Linyphia longidens. 



Linyphia longidens , Wider, Museum Senckenb. B. i. p. 270. taf. 18. 



fig, 5 ; Walck. Hist. Nat. des Insect. Apt. t. ii. p. 264. 

 tardipes, Blackw. Lend, and Edinb. Phil. Mag. Third Series, 



vol. viii. p. 488. 



On obtaining a copy of the first volume of the 'Museum 

 Senckenbergianum,' I immediately perceived that Linyphia lon- 

 gidens and Linyphia tardipes are specifically the same. See the 

 synonyma. 



This spider is found in Denbighshire, Yorkshire, and Lanca- 

 shire under stones and detached pieces of rock, and in December 

 1848 Mr. J. Hardy forwarded an adult female to me from Ber- 

 wickshire. It pairs in August and September, and the female 

 fabricates several cocoons of white silk of a fine but compact 

 texture, which she attaches to the inferior surface of stones by a 

 small web ; they are flat on the side in contact with the stones, 

 and convex, with a depressed margin, on the opposite side. The 

 largest of these cocoons measures :^th of an inch in diameter and 

 contains about 40 spherical eggs of a pale yellow colour, not 

 agglutinated together, but enveloped in delicately soft silk. The 

 snare of this species consists of a small, compact, horizontal sheet 

 of web constructed in cavities beneath stones, on the under side 

 of which it takes its station in an inverted position. In the dis.. 



Ann. ^ Mag. N. Hist. Ser. 2. Vol.'ix. 2 



