424 



(Pag. 70.) Thomisus audax [= Xysticus pini (Hahn) 1831]. 



Syn.: 1831. Thomisus pini Hahn, Die Arachn., I, p. 26, Tab. VIII, fig. 23. 

 1831. „ „ id., Monogr. Aran., 6, Tab. 2, fig. C. 

 1835. Xysticus MOEDAX C. Koch, in Hu:rr.-Soh2eff., Deutschl. Ins., 130, 

 19, 20 (sec. Uebers. d. Arachn.-Syst. , 1). 

 ?1835. „ AUDAX id., ibid., 129, 16, 17 (ad part.). 

 ?1837. „ CINEREUS id., Uebers. d. Arachn.-Syst., 1, p. 26. 

 ?1838. „ „ id., Die Arachn., IV, p. 63, Tab. CXXVI, fig. 290. 



1815. „ AUDAX id., ibid., XII, p. 74, Tab. CCCXni (ad part.:), 



figg. 1007 , 1008. 



1851. Thomisus pini Westr., Forteckn., cet. , in Goteborgs Vet.- o. Vitt.- 



Samhalles Handl., Ny Tidsfoljd, 2, p. 50. 

 1856. XySTlCUS PINI Thor., Eec. crit. Aran., in Nov. Act. Eeg. Soc. 



Scient. Ups., Ser. 3, II, p. 111. 

 1861. Thomisus cristatus "Westr., Aran. Suec, p. 418 (S ad part.). 

 1861. „ cinereus id., ibid., p. 424 (=$). 

 1872. Xysticus cristatus Var. pini Thor., Rem. on Syn., p. 236. 



Contrary to what I had formerly supposed (vid. sup., p. 236 et 

 seq.), Blackwall's Thorn, audax or Xyst. pini Hahn appears to be 

 specifically different from my X. cristatus Var. a, or Thorn, cristatus 

 Blackw. : the Rev. Mr Cambridge has pointed out to me a little dif- 

 ference in the form of the anterior anchor-shaped process under the 

 bulbus genitalis in the males of these two forms, and this difference, 

 which appears to be constant, has, in conjunction with their some- 

 what different colour, induced me now to take them up as separate 

 species. In X cristatus in fact, the outward-pointing, tooth-like 

 branch of this said process is situated clearly something above the 

 inward-pointing branch, which moreover is considerably longer than 

 the other branch; whereas in X pini the two arms or branches both 

 proceed from the same point, just opposite to each other, and the inner 

 is scarcely longer than the outer, wherefore the whole process is 

 more like a J_ or an anchor than in the typical X cristatus. — The 

 females of the two species can probably only be distinguished from 

 each other by a slight difference in their colour, and particularly by 

 the different form of the wedge-shaped dark patch on the pars ce- 

 phalica (vid. sup., p. 239). 



In determining C. Koch's X. viaticus and X audax, I have, as 

 has already (p. 236) been mentioned, followed Dr L. Koch: the spe- 

 cimens of "X audax C. Koch", with which that gentleman has kindly 

 obliged me, include both sexes of both X. cristatus and X. pini. As 

 moreover Ohlert has described X cristatus under the name of X 



