535 



(Pag. 522.) Xystica robusta. 



Xysticu* fucatu* (Walck.) 1802. 



Syn.: 1802. Aranea fucata Walck., Faune Par., II, p. 232. 



1805. Thomisus fucatus id., Tabl. d. Aran., p. 32. 



1830. „ „ id. , Faune Franc., Arachn., p. 72. 



?1831. „ robustus H.uin, Die Arachn., I, p. 50, Tab. XIII, figg. 



38, A-C. 



?1833. „ obscurus id., Monogr. Aran , 7, Tab. IV, fig. c. 



?1836. „ robustus id., ibid., 8, Tab. Ill, fig. e. 



1837. r FUCCATUS Walck., H. N. d. Ins. Apt., I, p. 505. 



1869. Xysticus „ Canestr. et Pav., Aran. Ital. , p. 92 '). 



1872. „ FUCATUS Thor., Rem. on Syn , pp. 244, 251. 



Whether Hahn's Thom. robustus and Th. obscurus belong to this 

 species, or to Th. bufo Duf., or lastly to some third, to me unknown 

 species, as Simon 2 ) seems to suppose, is very uncertain. C. Koch 3 ) 

 looks upon Th. robustus Hahn as probably the female to X. morio 

 or fuscus C. Koch, concerning which see more p. 538. In a female 

 from Italy, sent me by Canestrini under the name of X fucatus 

 (Walck.), which appellation is probably correct, the cephalothorax 

 is 3'/ a , the l:st and 2:nd pairs of legs each 9" a millim. long, that 

 is, only about 2 3 / 4 times as long as the cephalothorax. The tibiae 

 of the l:st pair have on the under side two rows of short, strong 

 spines, with 5 spines in the one and 4 in the other row; the legs 

 are particularly stout, the tarsi, especially those of the anterior legs, 

 very thick, scarcely more than 3 times as long as their greatest 

 breadth. The vulva consists of a little pale fovea well defined by 

 elevated margins in front and at the sides. The cephalothorax is 

 garnished with forward-directed, short, blunt (but not club-shaped) 

 bristles. The area of the four centre eyes appears to me of precisely 

 equal breadth before and behind. The colour is dark greyish brown, 

 with blackish mottling; the cephalothorax has on its hinder slope a 

 whitish, in front broad and slightly notched, pale spot. The ster- 

 num is greyish brown, thickly sprinkled with small, blackish spots 

 and points. The legs have indistinct rings of a paler colour; the 

 anterior patellae are on the under side blackish. The back of the 

 abdomen is sprinkled with blackish points and small spots, which 



1) According to a specimen sent by Prof. Canestrini. 



2) Aran. nouv. ou peu conuus du midi de l'Eur. , p. 50. 

 3; Die Arachn., IV, p. 62. 



68 



