40 ARKIV FÖR ZOOLOGI. BAND 2. NIO 19. 



Length of 2d leg 10,7 mm. 



» >> 3d » ........ 4,2 » 



>> » 4th » 4,8 » 



Length of joints of 1st leg: 0,r,— 0,2— 3, i— 1—2,6—2,:— 0,8. 



» » » >> 4th >> 0,3 — 0,2 — 1,5—0,4 — 1,1^ — 1 — 0,6. 



Numerous young and adult specimens from Salta and 

 Tatarenda in Bolivia and Quinta in Argentine. 



Fam. Platoridae. 

 Vectius Sim. 



Simon, Hist. nat. des Avaignées, T. II, fasc. i, 1897, p. 19. 



T. niger Sim. (Pl. 6, fig, 16 a— e.) 



Male. — Cephalothorax dark brown, witli more or less 

 blackish markings and with a piceous margin. It is perfectly 

 flat witli deep impressions, that form on each side of tlio- 

 racic part 3 or 4 more or less distinct rectangular fields cor- 

 responding to the coxse. It is much broader than long with 

 rounded sides. The pars cephalica is very distinct defined 

 and projeets with neariy parallel sides in front. Behind the 

 thoracic part there is a very acute a little forwards curved 

 transverse carina. The integument is clothed with very fine 

 and thinly-set short hairs and the margin is furnished with 

 long black spiniform hairs or bristles. Behind the eyes the 

 cephalic part is a little depressed. 



Eyes. — Anterior row as seen from above very slightly 

 procurved with eyes neariy equal in size. Anterior centrals 

 about their diameter apart and distance from anterior laterals 

 neariy thrice as long. Lateral eyes neariy twice the diameter 

 of posteri or ones apart. Posterior laterals much larger. Po- 

 sterior row slightly procurved with posterior centrals oblique, 

 oval and smallest. Posterior centrals not fully their axes 

 apart and the distance form posterior laterals thrice as long. 

 Central area broader than long, much smaller in front. Po- 

 sterior centrals neariy twice as large as anterior ones. The 

 eyes, except posterior centrals, surrounded by black rings. 



Cheliceres reddish brown, very convex, short and clothed 

 with long blackish bristles. Fang-groove with two short 



