36 Rev. F. O. rickard-Cambrldge on British Spiders. 



'i he species P. montigena seems, aecording to Prof. Kul- 

 cznski, not to be P. montigena, Sim., but a distinct species. 

 It will therefore resume its specific name niger, F. Cb., and 

 enter the genus Oreoneta, which this author has formed for its 

 reception. 



The species described as P. adipatum, L. K., unless 

 there should appear any sufficient reason to the contrary, will 

 fall under the genus Macrargus, Dahl. 



Thus limited, the genus Porrhomma embraces a fairly 

 liomogeneous group of spiders. 



By an oversight in my last paper a species is described 

 under genus Porrhomma (not Linyphia, as quoted by 

 Messrs. Evans and Carpenter *), with the specific name 

 Meadii. This species had already been described as micro- 

 phthalma, but my anxiety to honour the learned dipterologist 

 who virtually discovered the species caused me to forget the 

 honour due to the author who had long ago given to it the 

 name microphthalma ; and I have to thank Messrs. Evans 

 and Carpenter for kindly pointing out this error. 



The synonymy of this species should therefore run as 

 follows : — 



Porrhomma microphthalmum^ Cb. 



Neriene errans, Blk. (in part), 1864. 

 Linyphia microphthalma, Cb. Spid. Dor. 1879. 

 Linyphia ijicerta, Cb. Spid. Dor. 1879. 

 Linyphia decern, Cb. Spid. Dor. 1879. 

 Porrhotnma Meadii, F. Cb. 1894. 



Porrhomma egeria, Sim. (PL IV. figs. 13, 14.) 



Length of male 2*5 millim. ; female 3 millim, or 1^ line. 



Cephalothorax, fcdces, hgs^ and palpi bright orange-red. 

 Abdomen dull olive-green or white. 



Legs furnished with long spines and hairs similar to those 

 of microphthalmiimj save those on the femora. 



Femora i. with three spines, two on the inner side and a 

 third in front towards the apex. Femora ii, with one single 

 spine about the middle ; none on femora iii. and iv. 



The female sometimes has four .spines on femora i. and two 

 on femora ii., while one specimen had one on femora iii. 



Protarsi without any spines. 



Caput very high, convex, clothed with short hairs. 



Eyes very minute, in some cases almost ob.solete. In 

 several specimens of both sexes the central anterior pair of 



* ' A List of the Spiders of Edinburgh,' 1894, p. 560, note. 



