20 Mr. J. Blackwall on the Structure, Functions, (Ecojiomy, 



pared with Linyphia marginata, it will immediately be seen liow 

 easy the transition is from the genus Linyphia to that of Neriene. 



124. Neriene bicolor. 



Neriene bicolor , Blackw. Lend, and Edinb. Phil. Mag. Third Series, 

 vol. iii. p. 344 ; Research, in Zool. p. 366. 



Neriene bicolor is common in many parts of England and 

 Wales. It appears to prefer well- wooded districts^ constructing 

 among grass a snare similar to that of Neriene marginata. Not 

 unfrequently it may be found on rails or concealed under stones 

 partially imbedded in earth. The male has the palpal organs 

 developed in autumn. 



125. Neriene rufipes. 



Neriene rufipes, Blackw. Lend, and Edinb. Phil. Mag. Third Series, 

 vol. iii. p. 345 ; Research, in Zool. p. 368. 



Specimens of this spider were obtained in 1832 under stones 

 and on rails in the township of Crumpsall. In June the female 

 fabricates several globular cocoons of yellowish white silk of a 

 slight texture, which she attaches to the inferior surface of 

 stones ; the largest of them measures |^th of an inch in diameter, 

 and contains about 50 spherical eggs of a yellowish white colour, 

 not adherent among themselves. 



126. Neriene livida. 



Neriene livida, Blackw. Lond. and Edinb. Phil. Mag. Third Series, 

 vol. viii. p. 486. 



Mr. J. Hardy forwarded to me from Berwickshire, in December 

 1848, an adult male of this species, which is plentiful in the val- 

 ley of the Conway, where it conceals itself under stones. In July 

 the female spins several globular cocoons of white silk of a slight 

 texture, attaching them to some depression in the stone selected 

 for her retreat ; the largest of these cocoons measures yth of an 

 inch in diameter, and comprises about 30 spherical eggs of a pale 

 yellowish white colour, not agglutinated together. 



127. Neriene furva. 



Neriene furva, Blackw. Lond. and Edinb. Phil. Mag. Third Series, 

 vol. viii. p. 486. 



One adult male is the only specimen of this spider that I have 

 seen ; it was discovered under a fragment of rock in a wood at 

 Oakland in June 1835. 



128. Neriene errans. 



Neriene errans, Blackw. Linn. Trans, vol. xviii. p. 643. 

 4rgus errans, Walck. Hist. Nat. des Insect. Apt. t. iv. p. 511. 



