THE DRASSID/E 



5 



OOOq 



oooo 



long. The eyes are arranged as in varicgata, the middle 

 eyes being even more distinctly farther apart than they are 

 from the lateral eyes. 



Prosthesima atra. — Black, and 

 less than a third of an inch long. 

 It may be mistaken for a small 

 Gnaphosa conspersa, but, besides 

 the small size, the abdomen is 

 usually longer in proportion and 

 the head is narrower than in 

 Gnaphosa. The color is usually 

 a deeper black and less likely to be gray in 

 the young and rusty in the old, but the feet an 

 under side of the abdomen are sometimes yello 

 ish in the young. The eyes (fig. 14) are closer 

 together and the two rows more nearly of the 

 same length. In alcohol the cephalothorax I(,s ' I4 ' I5 ' 1 



Prosthesima atra. — 



and legs are blacker than in Gnaphosa and less 16, female en- 

 brown. The maxillae (fig. 15) are a little longer 

 and less rounded at the outer corners than in 

 Gnaphosa or Pythonissa. The mandibles (fig. 1 5) 

 are without the large teeth under the claw that 

 Gnaphosa and Pythonissa have, and they 

 are turned forward more than in those 

 genera. It lives on the ground and under 

 stones. The cocoon is white or pink, 

 attached by the under surface, with the 

 upper side convex and thickened in 

 the middle, sometimes with a little dirt 

 attached to it. 



Prosthesima ecclesiastica. — Black, with 



larged four times. 

 14, eyes seen from 

 in front. 15, max- 

 illa?, labium, and 

 ends of mandibles 

 from below. 



Fig. 17. 



Fig. 18. 



white markings along the middle of the Prosthesima ecclesiastica.- 



° Upper and under views of 



back. One-third of an inch long, a little female enlarged four times. 



