Superfamily Argiopoidea 



Myrmarachne albocinctus (M. al-bo-cinc'tus).— - This is an 

 ant-like spider which differs from the species of Peckhamia in that 

 the quadrangle of eyes occupies less than half of the length of the 

 cephalothorax, and from Synemosyna in that the hind part of the 

 thorax is not narrowed so as to resemble a pedicel. In the palpi 

 the tibia and tarsus are very much thickened and covered with 

 stiff hairs on the under side. The cephalothorax is yellowish brown 

 with an indistinct light mark across the middle. The abdomen 

 has, at the constriction, a white band, which slopes backward 

 along the sides and nearly to the spinnerets. The length of the 

 body is from .20 to .28 inch. 



This species is widely distributed throughout the eastern half 

 of the United States. 



Genus ICIUS (Ic'i-us) 



The cephalothorax is not very high and only slightly convex, 

 with the sides usually nearly parallel. The quadrangle of eyes 

 occupies less than half of the length of the cephalothorax; the 

 small eyes vary in position from midway between the anterior 

 laterals and posterior laterals to nearer the anterior laterals. The 

 sternum is not greatly narrowed in front. In our common species 

 the abdomen is iridescent or metallic. 



Ten species have been found in the United States; of these 

 the following are the more common. 



Icius elegans (1. tTe-gans).-- This is a small spider measuring 

 from one sixth to one fourth inch in length. It is bronze-green, 

 being clothed with brilliant iridescent scales. The legs are yellow, 

 with a black longitudinal line above; but in the female the femur 

 of the first is nearly all black; and in the male there is on the inner 

 side of the tibia of the first legs near the distal end an inky black 

 spot, from which grows a fringe of black hairs. In the male there 

 are two tufts of long hairs pointed forward. In both sexes there 

 is a white band around the lower margin of the cephalothorax. 

 The abdomen of the male is without bands or spots; but in the 

 female there is a white basal band. , 



This species is widely distributed in the eastern half of the 

 United States. 



Icius similis (I. sim'i-lis).— -This species very closely re- 

 sembles the preceding; but the male lacks the dark spot at the 



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