F. P. SMITH ON THE SPIDERS OF THE ERIGONE GROUP. 113 



propose a new genus, Erigonidium, for its reception. The most 

 obvious character by means of which it ma)- be separated from 

 allied genera is the process at the anterior end of the patella. 

 This is practically non-existent in Stylothorax and allied genera ; 

 but in Erigone it is much more highly developed than in 

 E. graminicolum. The structure of the reproductive organs in 

 E. gram in i col am is very different from that of any allied species. 

 The tibia, and the general build of the male palpus in this species, 

 are Erigoniform, but much less highly developed than in the true 

 Erigones. The palpal organs are moderately developed, and their 

 apical process is conspicuous and shaped very much like a screw. 

 The falces are strong, furnished upon the outer surface with 

 numerous strong granulations, and, in front, with a prominent 

 denticule. 



E. graminieolum (Sund.), 1832. 

 1832. Linyphia graminicola, Sund. 

 1864. Xeriene graminicola, Bl. 

 1879-81. „ „ Cambr. 



1884. Gongylidiwm graminieolum, Sim. 

 1896. Erigone graminicola, Hull. 



Genus Erigone, Sav. et Aud. 1825-27. 

 1864. Xeriene, Bl. (ad partem). 

 1879-81. ,, Cambr. (ad partem). 

 1884. Erigone, Sim. (ad partem). 

 1886. ,, Dahl (ad partem). 



E. dentipalpis (Wid.), 1834. 

 1861. Erigone dentipalpis, Westr. 

 1864. Xeriene longipalpis, Bl. (ad partem). 

 1879-81. Xeriene dentipalpis, Cambr. 

 1884. Erigone dentipalpis, Sim. 

 1886. „ „ Dahl. 



E. atra, Bl., 1833. 

 1861. Erigone vagabanda, Westr. 

 1864. Xeriene longipalpis, Bl. (ad partem). 

 1879-81. ,, atra, Cambr. 

 1884. Erigone atra, Sim. 

 1886. „ „ Dahl. 



Jourv. Q. M. C, Series II. — !STo. 55. 8 



