TULLGREN, ARANE/E FR. THE GRAN CHACO. 



21 



» 



Measurements. 



Total length 13 



Length of cephalothorax .... 6,5 



Breadth » >> .... 5,5 



Length » abdomen 7 



Breadth » » 4,5 



Length » 1st leg 35,5 



» » 2d » 30 



» » 3d » 25 



» » 4th » 36,5 



mm. 



» 

 » 



>> 

 >> 

 » 

 » 

 » 

 » 



Female. — Cephalothorax very similar to that of the 

 male. A little broader in front. Central furrow much shorter. 



Eyes. Anterior centrals not fully their diameter apart. 

 Posterior centrals about their radius apart. 



Legs. Tibia I beneath with 6 very long spines at the anterior 

 margin and 5 ones a t the posterior margin; 5 shorter spines on 

 the anterior and 4 ones on the posterior side; no spines 

 above. Metatarsus I with 2. 2. 2 spines beneath and 2 basal 

 ones on the anterior side. Tibia and metatarsus II with a 

 similar armatnre. 



Abdomen a little destroyed; darker coloured. 



Crihellum small and not bipartite. 



Yulva yellow brown, not longer than broad. Behind two 

 large triangulär plates and between them a narrow carina. 

 Conf. the fig. 4c. 



In other parts similar to the male. 



Measurements. 



Total length 15 mm. 



Length of cephalothorax .... 7 » 

 Breadth » » .... 6,2 » 



Length -» abdomen 9,5 » 



Breadth » » • 6 » 



Length >> 1st leg • . 32,5 » 



» » 2d » 29 » 



» » 3d » 25,5 » 



» » 4th » ...:... 33 » 



A single female and a male from Tatarenda in Bolivia 



