42 ARKIV FÖR ZOOLOGI. BAND 2. N:0 19. 



A single male from Quinta, Prov. de Jujuy, Argertine. 

 This species is first described by Simon in Revision de la 

 famille des Sparassidse in Act. de la soc. Linnéenne de Bor- 

 deaux Vol. 34; 4 ser. T. IV., 1880, p. 236. It was the female, 

 that he referred to the genus Plator. In Hist. nat. d. Araig- 

 nées I. II Mr Simon constitutes a specific family: PJatoridae 

 for the three genus Plator, Doliomalus and Vectius, after 

 having before referred them to Sparassidse. In the same 

 work he gives a short description on pag. 17 of the pedi- 

 palp of the male of Vectius niger Sim. and adds on pag 18: 

 »A part sa patte-machoire, le male ne différe de la femelie 

 que par sa taille un peu moindre». 



The genus Vectius and the two other ones are very 

 near allied to some genus of the group Philodrominse and to 

 Selenops, but »rabscence compléte de scopulas et de fasci- 

 cules aux tarses des pattes» ha ve been sufficient for Mr Simon 

 for separating them and to constitute a specific family. There- 

 fore it is of a particular importance to have observed a 

 distinct scopula by the male of Vectius niger. On account 

 of this argument it seems to me to be impossible to pre- 

 serve the family Platoridse. As I however only dispose of a 

 single male of this group I dåre not give any judgement 

 upon its systematical position and therefore I place them 

 for the present separat e. 



Fam. Clubionidae. 



Selenops Latr. 

 S. argeiitiiiiis n. sp. (Pl. 6, fig. 17.) 



Female. — Cephalothorax dark reddish, clothed with a 

 short pubescence of white colour. It is broad oval, nearh^ 

 as long as the first femur, distinctly shorter than fourth 

 tibia. In front it is by half as broad as on the broadest 

 part. Very depressed. Central furrow distinct, Y-shaped. 

 Cephalic and thoracic strise comparatively distinct. 



Eyes. — Anterior row consists seemingJy of 6 eyes, of 

 which the most lateral ones in according to Mr Simon in 

 reality are the posterior centrals. The four central eyes in 



