40 



approximate to red, and I have a male that, by its size and the 

 colour of its legs, undoubtedly belongs to M. albimacula, but under 

 whose metatarsi there are no perpendicular hairs. The presence or 

 absence of these hairs appears to have as little significancy in M. seg- 

 mentata as in Tetragnatka externa (vid. inf.). Even Menge (loc. cit., 

 p. 88), though he believes himself to have seen in the organs of 

 copulation of the males differences between the two forms in question — 

 which differences I have not been able to verify on my Swedish specimens, 

 among which are two of "M. albimacula" sent me by Westring him- 

 self — looks upon the latter as a mere variety of the former. We 

 designate it as Var. fi, Mengei. 



Araneus x-notatus, which C. Koch (Die Arachn. , VI, p. 142) 

 makes a synonym to Zilla reticulata, does not belong to this species, 

 but to his Zilla calophylla. Vid. supr. sub Z. x-notata Westr. 



(Pag. 82.) 4. M. ulbimacula [= Meta segmentata (Clerck) 1757: 



Var. /?, Mengei]. 



Vid. preceding species, M. segmentata Westr. 



(Fag. 83.) V. TETRAGNATHA [= Tetragnaiha Latr. 1804]. 

 Vid. Thor., On Eur. Spid., p. 62. 



(Pag. 84.) 1. T. extensa [= Tetragnaiha extensa (Linn.) 1758]. 



Syn.: 1758. Aranea Extensa Linn., Syst. Nat., Ed. 10, I, p. 621. 



1763. „ Solandri Scop., Ent. Carn., p. 397. 



1763. „ Mouffeti id., ibid., p. 398. 



1805. Tetragnatha Extensa Walck., Tabl. d. Aran., p. 68. 



?1826. „ rubra Risso, H. N. d. princ. prod, de l'Eur. mer., V, 



p. 168. 



1837. „ obtusa C. Koch, Uebers. d. Arachn.-Syst., 1, p. 5. 



1837. „ gibba m., ibid. 



1861. „ obtusa Westr., Aran. Suec, p. 86. 



1864. „ EXTENSA Blackw., Spid. of Gr. Brit., II, p. 337, PI. 



XXVIE, fig. 265. 



1866. „ „ Menge, Preuss. Spinn., I, p. 90, PI. 15, tab. 26. 



1866. „ OBTUSA id., ibid., p. 93, PI. 15, tab. 27. 



This not only in size and colour, but also in form very variable 

 species is divided by Westring and Menge into two, T. extensa and 



