396 



At Satra in Westmanland I have met with a female specimen 

 (much injured), with legs of a uniform yellowish colour, of A. fari- 

 nosus (C. Koch), Sim. '), which is very closely allied to A. falcatus, 

 but is nevertheless evidently a separate species: even its vulva is 

 somewhat different from that of A. falcatus, for it is composed merely 

 of a transversal, brown, horny area, bordered in front by a ww -shaped 

 furrow, and notched at the posterior margin. This area then corre- 

 sponds only to the posterior part of the vulva in A. falcatus, for, the 

 low, brown protuberances in front of the transversal furrow in A. 

 falcatus are here absent , whereas in A. falcatus the notch in the po- 

 sterior margin of the vulva is wanting. Simon, to whom I sent this 

 specimen, has confirmed the correctness of the name Avhich I had 

 given it. A couple of females, the vulvae of which perfectly agree 

 with the above-described, I have received from Austria of Mr v. 

 Kempelen: in the design formed by the distribution of the colours 

 of the abdomen they closely resemble Koch's figure (loc. cit.) of his 

 Euophrys farinosa. The male of A.farinosus, according to Simon, 

 differs from A. falcatus c? by the bulbus "appearing to be more glo- 

 bular and more rounded at the base : its upper and exterior (supero- 

 externe) apex is armed with a little divergent tooth". 



(Pag. 580.) 21. A. tigrinus [= Alius er -rattens Walck. 1825]. 



Syn.: 1825. Attus erraticus Walck., Faune Franc., Arachn. , p. 46. 



?1831. Salticus agilis Hahn, Die Arachn., I, p. 72, Tab. XVIII, fig. 54. 

 91831. „ gracilis id., ibid., p. 73, Tab. XVUI, fig. 55. 

 1837. Euophrys tigrina C. Koch, Uebers. d. Arachn.-Syst. , 1, p. 33. 

 1841. Salticus distinctus Blackw., The differ, in numb, of eyes, cet., in 



Transact, of the Linn. Soc, XVIII, p. 616. 

 1848. Euophrys tigrina C. Koch, Die Arachn., XIV, p. 6, Tab. CCCCLXIX, 



figg. 1275-1277. 



1850. Ino tigrina id., Uebers. d. Arachn.-Syst., 5, p. 63. 



1851. Attus tigrinus Westr., Forteckn. , cet. , p. 56. 



1861. Salticus distinctus Blackw., Spid. of Gr. Brit., I, p. 54, PI. 



m, fig. 29. 



1869. Attus erraticus Sim., Monogr. d. Attides, p. 588 (122). 



The synonyms of this species are difficult and in part perhaps 

 impossible to determine with certainty. Salt, distinctus Blackw., 

 Euophrys tigrina C. Koch and Attus erraticus Sim., are however per- 



1) C. Koch, Die Arachn., XH1, p. 223, Tab. CCCCLXVIH, fig. 1268; SI- 

 MON, Monogr. d. Attides, p. 59 (49); id., Eev. d. Attidse, p. 144 (20). 



