290 ^yisconsm Academy of Sciences, Arts, and Letters. 



Thev may be distinguislied by two points, the shape of the 

 cephalothorax, which in calif ornicus is nearly circular, being 

 only 1 mm. longer than wide, while in Johnsonii it has a less 

 rounded appearance, being, in fact, nearly 2 mm. longer than 

 wide, and the relative length of the first leg, which in calif orni- 

 cus exceeds the second by the tarsus, metatarsus and part of the 

 tibia, while in Johnsonii it is lono^er bv onlv the tarsus and a 

 part of the metatarsus. 



We hav.e one male from California. It may, perhaps, be the 

 mate of P. ardens. 



Phidippus hardiis, sp. nov. 

 PI. XXIII, figs. 6-6a. 



This rather heavy looking species is of somewhat over 

 medium size. It is yellow, with the legs and palpi dark brown, 

 and the f alces iridescent. 



$. Length 11. Length of cephalothorax 4.5; width, 3.5. 



Legs, 4132. 



The cephalothorax is dark reddish brown. The upper sur- 

 face of the cephalic part and of the anterior thoracic, is covered 

 with short, bright, yellow hairs. The abdomen has a dark red- 

 dish ground color, entirely covered with the same gold colored 

 hairs, which have a much brighter effect here than on the ceph- 

 alothorax. Under alcohol four pairs of indistinct white bars 

 appear on the posterior part. Around the anterior end is a 

 light colored band which runs doT\m, obliquely, on the sides, and 

 further back, on each side, is another oblique light-colored band. 

 The falces are rugose and rather short, and are brilliantly 

 metallic, with violet and green reflections. The palpi and legs 

 are dark reddish brov^i, with snow-white scales and some long 

 white hairs. The femur, patella, and tibia of the first leg are 

 fringed on the underside, the patella with white, and the other 

 joints with brown hairs. The femur has also a fringe of black 

 hairs on the upper surface. 



Red and orange are not uncommon colors among the spiders 

 of this genus, but P. McCoohii is the only other female where 

 the hairs are really yellow, and in that species the ground color 



