4 



1845. Epeira angulata C. Koch, Die Arachn., XI, p. 77, (ad partem:) Taf. 



CCCLXXIX, figg. 892, 893. 

 1856. „ „ Thor., Eec. crit. Aran., p. 9 (excl. "Var. y v ). 



?1864. „ „ Blackw., Spid. of Gr. Brit., II, p. 360, PI. XXVII, 



fig. 259. 



1866. „ „ Menge, Preuss. Spinn., p. 47, PI. 2, tab. 2. 



" Var. c" [ Epeira Nordmanni N.] : 



1845. Epeira angulata C. Koch, Die Arachn., XI, Tab. CCCLXXIX, figg. 



894, 895. 



1856. ,, ,, Var. y Thor., Eec. crit. Aran., p. 9. 



The above synonyms, with the exception of the last two, apply 

 only to the varieties of Westring's E. angulata, which he (p. 24) 

 marks as "Var. a" and "Var. b": his "Var. c" (= E. angulata Var. y 

 Thor., loc. cit.) is a separate species, which I call E. Nordmanni, in 

 memory of the highly deserving zoologist Al. v. Nordmann, to whom 

 we are indebted for the first knowledge we possess of Finnlands Spi- 

 der-Fauna. The female of this species differs from the genuine E. 

 angulata (Clerce) in its smaller size — I have a full-grown spe- 

 cimen, of which the cephalothorax is only 4 inm - long, the 1 st pair of 

 legs however 17 mm - — , by the different colour of the abdomen (conf. 

 our descr., loc. cit.), and especially by the form of the "corpus" of the 

 vulva ') , which is very short , when seen from before or from below 

 scarcely perceptible; on its posterior (upper) side it exhibits one lon- 

 gitudinal central furrow, bordered by two dark, parallel, somewhat 

 ^-formed ribs. The belly is without tubercles behind the vulva. The 

 pars cephalica is a little narrower in front, and of a yellowish brown 

 colour, darker at the sides ; the sternum is dark brown , without a 

 longitudinal yellow central mark. To this species, E. Nordmanni, 

 the varieties of C. Koch's E. angidata, which he has figured loc. cit. 

 fig. 894 and 895, undoubtedly belong. — I have myself taken E. 

 Nordmanni in Upland, and have also received specimens from Finn- 

 land, from Al. v. Nordmann. 



1) Conf. Eec. crit. Aran., p. 11. — Under the term vulva I comprehend the 

 external sexual organs of the female, or what is commonly called epigyne, an ill- 

 formed word , by which originally (in Savignt and Audotjin) was meant the 'sea- 

 pus" ("clavus" Menge) in which in certain spiders, as e. g. Epeira angidata. 

 the vulva is drawn out. Menge calls the vulva sarum, which word he derives 

 from ''odpov, pudendum muliebre , Hesych." It is not however oolqov, but oo.qwv, 

 which according to Hesychius has that signification , and if a Latin word is to be 

 formed from it, that word must me saro, not sarum. — -Sapof signifies a broom. 



