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THE SPIDERS OF THE DIPLOCEPHALUS GROUP. 



By Frank P. Smith. 



{Read April 20th, 1906.) 



The Diplocephalus Group contains a vast number of minute 

 spiders, including the smallest known species, and many of 

 curious and grotesque form. A careful revision of the numerous 

 genera constituting this group has resulted in considerable 

 modification of the generally adopted nomenclature. I have 

 made no alterations, however, without giving full details, and 

 it will therefore be a comparatively simple matter, for those 

 who care to take the trouble, to verify or question my conclu- 

 sions from the data supplied. 



The following synonymic list includes all the species of the 

 Dlplocephalus Group which have occurred in the British Isles : — 



Genus Lophomma, Menge, 1868. 



1847. Argus, Walck., Ins. Apt. (ad partem). 

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

 1864. Xeriene, BL, Spid. G. B. I. (ad partem). 

 1864. Walchenaera, Bl., Spid. G. B. I. (ad partem). 



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



1869. Microneta, ,, ,, „ 

 1870-3. Erigone, Thor., Bern, on Syn. (ad partem). 

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

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



1883. Tmeticus, Bertkau, Spin, Bheinp. (ad partem). 



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



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

 1894. Lophomma, Kulcz., Ar. Hung. 

 1900. „ Cambr., List Br. Jr. Spid. 



1900. Tapinocyba, „ „ „ (ad partem). 



Type : L. punctatum, (Bl.). 



