Superfamily Argiopoidea 



Eriophora circulata (E. cir-cu-la'ta). — The adult spiders 

 measure from one third to one half inch in length; the male is 

 nearly or quite as long as the female, but has a smaller abdomen. 

 The cephalothorax is yellow. The abdomen is subtriangular, 

 being almost as wide near the base as long; it is rounded before and 

 obiusely pointed behind (Fig. 539). On the dorsal wall of the 

 abdomen there is large subtriangular patch, which is yellow in 

 alcoholic specimens but which is green in life. At the hind end 

 of this patch there is a round, black tubercle edged with the 

 light colour; and back of this a second similar tubercle. On 

 each side of the hind half of the light patch and of the two tubercles 

 there is a row of four oblique black bars. 



This is a subtropical species which is found in the Southern 

 States and on the Pacific Coast as far north as Oregon. It has 

 been mistaken for the E. bivariolata of Central America. 



Genus MANGORA (Man-go'ra) 



The most available character for distinguishing this genus 

 from our allied genera is the fact that the tibia of the third legs 



bears a cluster of slender hairs on 

 the anterior side near the base 

 (Fig. 540). The cephalothorax is 



Fig. 540. TIBIA OF THE 

 THIRD LEG OF MANGORA 



Fig. 54i- 

 MANGORA GIBBEROSA, FEMALE 



more or less gibbous or convex posteriorly; the median furrow of 

 the thorax is deep and usually extends forward so as to reach 

 the cervical groove; the median ocular area is narrower in front 



504 



