TULLGREN, ARANE^ FR. THE GRAN CHACO. 29 



Lahium much broader than long, rounded at the apex. 



Coxa of pedipalp much longer than broad, truncated at 

 the apex, with exteriör margin straight as by the genus 

 Meta. 



Sternum oval, a little broader than long, testaceous with 

 whitish markings at the margins and a brownish stripe be- 

 hind in the middle. 



Legs 1. 2. 4. 3., testaceous brown with numerous long 

 spines and hairs. 



Abdomen elongate oval, conically projected in front 

 and slightly tapering behind. The colour is on the back 

 whitish (perhaps silvery), a little reddish towards the sides 

 and with a T-shaped black mark in the middle. The ven- 

 ter is much darker brownish with a rectangular white spöt 

 in the middle. 



Vidva broader than long with an arounded lobe on each 

 side, this with a large concavity and surrounded by a nar- 

 row margin. In the middle a short adpressed clavus, that 

 is excavated at the apex (conf. the fig. 8 b). 



Measurements. 



Total length 6,5 mm. 



Length of cephalothorax 2,5 » 



Breadth » » .....1,8» 



Length » abdomen 4,8 » 



Breadth » » 2,6 » 



Length » 1st leg 12 » 



» » 2d » 10, 5 » 



» » 3d » 5,8 » 



>> » 4th » 9,5 » 



A single adult female from Quinta, Prov. de Jujuy in 

 Argentine. 



Aranea L. 



Linné, Systema naturae, ed. 10, 1758. 



A. Nordeiiskiöldii n. sp. (Pl. 3, fig. 9 a— d; Pl. 4, fig. 9 e-h). 



Female. — Cephalothorax is dark reddish brown; thora- 

 cic part mostly blackish except in the middle-line that is 

 paler; cephalic area red. It is clothed with long grayish 

 white hairs. Cephalic strise distinct, in the middle-line a de- 



