80 ON NEW AND RARE BRITISH ARACHNIDS. 



Ero Cambridgii, Kulcz, pi. A, figg. 30, 31, 32, 33. 



Ero Cambridgii, Kulcz, Revue Suisse de 

 Zoologie, Tom 15, fasc. I., 1907, p. 125 pi. ii., 

 figs. 78, 81, 82. 

 Ero thoracica, Wid.-Cambr., Spid. Dors., p. 233, 



ad partem. 

 Theridion variegatum, Bl., Spid. G. B. and Ir. 



p. 203, (ad partem). 



Professor Kulczynski informs us that some years ago 

 he received from the late F. 0. P. -Cambridge a spider 

 under the name of Ero thoracica, Wid. ( Theridion varie- 

 gatum, B.I), which he (Dr. Kulczynski) considered to be 

 new to science, and that he had described it under the 

 name Ero Cambridgii (I.e. supra). It appears on examina- 

 tion that we have two species in England under the 

 name of E. thoracica, Wid., and the recognition of these 

 two adds a fresh species to the British List. I find both 

 species mixed in my collection from various localities, 

 chiefly in Dorset. The two are exceedingly similar in 

 general character and appearance, but differ, among other 

 characters, in the form of the palpi and palpal organs of 

 the male, and in the form of the epigyne in the female. 



I have lately received an adult male E. Cambridgii 

 Kulcz., from Mr. Lancelot Carr, taken near Lichfield, 

 Staffordshire. 



Ero furcata, Villers. pi. A, figg. 34, 35, 36. 



Aranea furcata, ViDers-Sim., Arachn. de France, 



V., p. 36. 

 Ero thoracica, Wid.-Cambr., Spid. Dors., p. 233 



ad partem. 

 Theridion variegatum, Walck-Blackw., Spid. of 



B. and Ir., p. 203, ad partem. 



What the true synonyms of this species may be, it is 

 not easy to say, unless we had types or authentic typical 

 examples of some other nearly allied species described 



