129 



(Pag. 264.) 36. E. chelifera [= Erigone in bat x (Blackw.) 1833]. 



Syn : 1833. Neriene RUBENS Blackw., Charact. etc., in Lond. and Edinb. Phil. 



Mag., 3 Ser., Ill, p. 189. 

 1834. Theridium cheliferum Reuss, Zool. Misc., Arachn., p. 231 (237), 



PI. XVI, fig. 4. 



1841. Argus cheliferus Walck., H. N. d. Ins. Apt., II, p. 364. 



1850. Micryphantes isabellinus Mekge, Verzeichn. Danz. Spinn., p. 71. 



1851. Erigone chelifera Westr., Fmteckn. etc., p. 44. 



1864. Neriene kubens Blackw., Spid. of Gr. Brit., II, p. 270, PI. XVIII, 



fig. 184. 



1867. Micryphantes isabellinus Ohl., Aran. d. Prov. Preuss., p. 57, 80. 



1868. Gonatium cheliferum Menge, Preuss. Spinn., II, p. 180, PI. 34, tab. 82. 



The males of this and the following species may, as is well 

 known, be easily distinguished by the form of the palpi. The fe- 

 males on the contrary are very nearly alike and difficult to distin- 

 guish by any other criterion than the appearance of the vulva. In 

 the female of E. rubem or chelifera the two black stains, which the 

 vulva displays, diverge rapidly backwards; they occupy an area much 

 broader behind than before, and the breadth of which behind is 

 greater than its length; in the following species, E. isabellina, these 

 stains are larger, about double as long as they are broad, almost 

 parallel, and they occupy an area at least as broad in front as be- 

 hind, and not broader there than it is long. 



(Pag. 265.) 37. E. isabellina [= Erigone isabellina (C. Koch) 1841]. 



Syn.: 1841. Micryphantes isabellinus C. Koch., Die Arachn., VHI, p. 109, 



Taf. CCLXXXH, figg. 676-678. 

 1841. Neriene rubella Blackw., The differ, in the numb, of eyes, p. 648. 

 1851. Erigone isabellina Westr., Forteckn. etc., p. 44. 

 1864. Nekiene rubella Blackw., Spid. of Gr. Brit., II, p. 281, PI. 



XIX , fig. 194. 



1868. Gonatium isabellinum Menge, Preuss. Spinn., II, p. 182, PI. 34, 



tab. 83. 



The specific names isabellina and rubella for this species are 

 nearly contemporaneous. — When , of two synonymous names , whose 

 relative priority I am not able to determine with certainty, the one 

 has been proposed in an independent work, and the other in a 

 periodical of the same year, in which the other work appeared, I 

 have made it a rule to prefer (under circumstances in other respects 

 similar) the name published in the independent work; for the latter 



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