P. P. SMITH ON THE SPIDERS OF THE WALCKBNABRIA GROUP. 245 



1886. Trachynotus obtusus, Dahl. Monog. Erig. 



1900. Walckenaera obtusa, Cambr., List fir. Ir. Spid. 



Jacksonia nudipalpis, (Westr.), 1851. 

 1851. Erigone nudipalpis, Westr., Goteb. Handl 

 1861. „ „ „ Ar. Suec. 



1868. Tmeticus spinipalpis, Menge, Preuss. Spin. 

 1870-3. Erigone nudipalpis, Thor., Rem. on Syn. 

 1879-81. Walckenaera nudipalpis, Cambr., Spid. Dorset. 

 1884. ,. ,, Sim., Ar. de France. 



1900. „ „ Cambr., List fir. Ir. Spid. 



Genus Viderius, Sim., 1864. 

 1834. Theridium, Wid., Zool. Misc. (ad partem). 



1836. Mwryphantes, C. L. Koch, Die Arach. (ad partem). 



1837. Argus, Walck., Ins. Apt. (ad partem). 

 1861. Erigone, Westr., Ar. Suec. (ad partem). 

 1864. Viderius, Sim., Hist. Nat. Araig. 



1864. Walckenaera, Bl., Sjnd. G. B. I. (ad partem). 



1867. Mwryphantes, Oh]., Die Arach. (ad partem). 



1868. Lophomma, Menge, Preuss. Spin, (ad partem). 

 1879-81. Walckenaera, Cambr., Spid. Dorset (ad partem). 



1883. I thy omnia, Bertkau, Spin. Rheinp. 



1884. Wideria, Sim., Ar. de France. 



1886. Lophomma, Dahl, Monog. Erig. (ad partem). 

 1900. Wideria, Cambr., List Br. Jr. S]nd. 

 Type : V. anticus, (Wid.). 



Viderius anticus, (Wid.), 1834. 

 1834. Theridium anticum, Wid., Zool. Misc. 



1836. Mwryphantes tibialis, C. L. Koch. Die Arach. 



1837. Argus anticus, Walck.. Ins. Apt. 



1841. Walckenaera apicata, Bl., Trans. Linn. Soc. 

 1847. Argus apicatus, Walck., Ins. Apt. 

 1861. Erigone antica, Westr.. Ar. Suec. 

 1864. Walckenaera antica, Bl., Spid. G. B. I. 

 1864. Viderius tibialis, Sim., Hist. Nat. Araig. 



1867. Mwryphantes tibicdis, Ohl., Die Arach. 



1868. Lophomma anticum, Menge, Preuss. Spin. 

 1879-81. Walckenaera antica, Cambr., Spid. Dorset. 

 1883. Ithyomma anticum, Bertkan, Spin. Rheinp. 



