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



Abdomen is higlily destroyed, but has been grayish 

 white with black markings. The sides are black and on the 

 back behind there are träns verse black stripes. 



Vulva with a half-circular curved narrow brownish carina 

 ncluding a transverse oval testaceous area. Conf. the fig. 35. 



Measurements. 



Total length o(?) mm, 



Length of cephalothorax .... 2,ö » 



Breadth » > .... 2 » 



Length >> 1st leg • 7,2 >> 



» » 2d >> 6,8 » 



» » 3d » 5,2 >> 



» » 4:th '> 6,5 » 



A single female from Tatarenda in Bolivia. 



Fam. Salticidae. 



In going to classify a species of this large group of spi- 

 ders it is almost necessary to have it submitted to a special 

 study. The published descriptions of species are very of ten 

 so short that they are altogether insufficient for a distinct 

 identifying and the discriptions are only rarely furnished 

 with illustrations. From this judgement however the publica- 

 tions of Peckham, Cambridge and some other authors are to 

 be excepted. The systematical studies of Mr Simon have 

 certainly sol ved the chaos of genera, but in many instances 

 his system is provisionary and therefore an examination after 

 his tables is often very difficult or even impossible to 

 do if not a large material for comparison is within one's 

 reach. 



The identifying of the following species are therefore 

 only provisionary — for ought I know, — but I have taken 

 pains to draw some good figures, which may facilitate an 

 exact examination by another more qualified author. 



