TULLGREN, ARANE^ FR. THE GRAN CHACO. 37 



Abdomen träns verse-o val, convex. Marginal shields 17 

 and in the middle of the front a large triangulär one. In 

 tlie middle line 9 very small ones and on each side of that 

 5 large ones. Each shield surrounded by a narrow black 

 line and with a central dark brown spöt. The ground-colour 

 is yellowish gray. In the centrum a whitish cross with a 

 central dark brown spöt. The front-half blackish with a 

 V-shaped whitis marking. The venter blackish. 



Measurements. 



Total length 2,8 mm. 



Length of cephalothorax 1,4 » 



Breadth » » (in front) l,i >> 



Length >> obdomen 2,') >> 



Breadth » >> 2,7 >> 



Length >> 1st leg 2,4 '> 



>> » 2d >> 2,3 /> 



> > 3d » 1,7 » 



>> » 4th » 2,4 '> 



Three young specimens from Tatarenda, Bolivia. 



Fam. Mimetidae. 



Mimetus Hentz. 

 31. brasiliamis Keys. (Pl. 5. fig. 14 a, b.) 



Keyserling, E. Die Spinnen Amerikas, Theridiid», II, 2, 188C, p. 9. 

 P\. XI, fig. 138. 



To this species I refer a single adult female from Tata- 

 renda in Bolivia, 



As the figures published by Keyserling not are fully 

 satisfying, at least not perfectly agreeing with my specimen, 

 I have traced some new figures. The species is without 

 doubt very near allied to M. trituberculatus Cb. (Biol. Centr. 

 Americana, Arachnida-Araneidea Vol. 1. p. 297, Pl. XXXVI, 

 fig. 5.) 



