and Systematic Arrangement of British Spiders. 501 



tion of the o])inion that the female Theridion jlavo-maculatum 

 described by ]\I. Koch was immatiire, I subjoin the measurement 

 of an adult discovered under a stone in a wood at Oakland on 

 the 1 Ith of August 1855. Length, ^ths of an inch ; length of 

 the cephalo-thorax, — ; breadth, -jL ; breadth of the abdomen, 

 y-7 ; length of a posterior leg, y\ ; length of a leg of the third 

 pair, -~. The length of ]\I. Koch's specimen was only one line. 



Family Linyphiid^. 

 Genus Neriene, Blackw. 



After Neriene vagans in the catalogue (Ann. and Mag. Nat. 

 Hist. 2nd Series, vol. ix. p. 21) add the following species. 



Neriene dent at a. 



Theridion dentatum. Wider, Museum Senckenb. B. i. p. 229. taf. 15. 



fig. 8. 

 Argus dentatus, Walck. Hist. Nat. des Insect. Apt. t. ii. p. 354. 



Early in May 1854, adult males of this species, which has all 

 the characteristics of a Neriene, were taken by the Rev. Hamlet 

 Clark in Norfolk ; and in the autumn of the following year 

 Mr. R. H. Meade captured a male near Bradford. 



Neriene affinis. 



Neriene affinis, Blackw. Ann. and Mag. Nat. Hist. 2nd Series, 

 vol. xvi. p. 121 . 



Two adult males of this species were received from ]\Ir. R. H. 

 Meade in June 1855, one of which had been taken in the vicinity 

 of Burton-on-Trent, and the other at Hornsea, near the east 

 coast of Yorkshire, in the preceding year. 



After Neriene graminicola in the catalogue (Ann. and Mag. 

 Nat. Hist. 2nd Series, vol. ix. p. 269) add the following species. 



Neriene cornigera. 



Neriene cornigera, Blackw. Ann. and Mag. Nat. Hist. 2nd Series, 

 vol. xvii. p. 233. 



This remarkable spider w^as discovered among moss growing 

 under trees in a wood on the northern slope of Gallt y Rhyg, in 

 the autumn of 1854. 



Neriene montana. 



Neriene montana, Blackw. Ann. and Mag. Nat. Hist. 2nd Series, 

 vol. wii. p. 234. 



This spider, which was found on Ingleborough, a mountain in 



