The Palpi are short, the femoral joint curved inwards and widening 

 anteriorly, the tibial joint is as long as the patellar. 



The A hdomen is oval and is thickly covered with short downlying hair, the 

 Spinnerets are two jointed and of moderate length. The male and female are 

 coloured alike. 



The measurements in millimetres are as follows : — 



Long. Broad. 



Legs 



Palpi 



A few specimens from Yii-lin Fu on the borders of the Ordos desert. 



Lycosa, ordosa sp. n. 



The Cephalothorax is dark yellow brown, black on the eye area, thickly 

 covered with downlying white hair on the slightly lighter median stripe, 

 reddish on the side slopes, and white again on the marginal border. The 

 Mandibles are brighter yellow brown with upstanding white bristles on the 

 basal half, brown bristles on the lower half, and black fangs. The Lip is dark 

 yellow brown, paler at the front margin, the Maxillae brighter yellow, both 

 with long upstanding hairs and bristles. The Sternum is black brown, with 

 a short wedge shaped longitudinal, yellow patch in front, and long upstanding 

 bristly hairs. Legs bright orange, thickly covered with downlying white hair, 

 grey rings on the femoral joints and brown spines. The Abdomen both on 

 upper and under surfaces is darkish yellow thickly covered with flat white 

 pointed hairs. The Spinnerets rather darker yellow brown. 



The Cephalothorax is convex rounded at the sides square in front with a short 

 narrow longitudinal fovea at the top of the rear slope. The front row oi Eyes 

 are slightly procurved, the median larger than the side — rather more than half 

 their diameter apart, and less than half of the same from the laterals. The 

 Clypeus is three fourths the diameter of the front median and they are the 

 same distance from the eyes of the second row. These are nearly twice 

 the diameter of the front median and slightly more than their own diameter 



210 



