Superfarr.ily Argiopoidea 



very dark brown; the abdomen reddish brown above and darker 

 on the thin skin at the sides. The length of the body is about 

 one twenty-fifth of an inch. This species was described by 

 Emerton from specimens found under leaves in Massachusetts. 



Supergenus THEONOE/E (The-o-no'e-as) 



This supergenus differs from both the preceding and the 

 following one in lacking hard spots in the cuticle of the abdomen 

 except sometimes in the epigastric region. The stridulating organs 

 are absent or rudimentary. 



These spiders are all of minute size; many of them do not 

 exceed one twenty-fifth of an inch in length; they are ordinarily 

 found under stones, in dry places, more rarely on bushes. 



Representatives of three genera have been described in this 

 country. These can be separated as follows: 



A. Abdomen globose, cephalothorax short and high, narrow 

 in front. 

 B, The tibia of the first legs not as long as the cephalothorax; 

 cephalothorax broad. 

 C. Posterior median eyes nearer the lateral eyes than to 

 each other; median ocular area narrower in front 

 than behind. Theonoe 



CC. Posterior median eyes nearer each other than to the 

 lateral eyes; median ocular area wider in front than 

 behind. Microdipo \ \ 



BB. The tibia of the first legs longer than the cephalothorax, 

 which is more elongate than in the preceding genera. 



Mysmena 



AA. Abdomen elongate; cephalothorax broad in front; legs 



banded. Ceratinops 



Supergenus PHOLCOMMATE/E (Phol-com-ma'te-ae) 



In the typical members of this supergenus the anterior 

 median eyes are much smaller than the other eyes ( Eig. 575); 

 but in the only genus yet found in our fauna the difference is less 

 marked (Fig. $76). I he cephalothorax is short, broad, and high; 

 and the thoracic part slopes greatly. The presence of an ab- 

 dominal shield and of stridulating organs distinguishes these 



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