Superfamily Arglopoidea 



trifolium candicans, which was first described by McCook. In this 

 variety (Fig. 505) the general appearance is strikingly different 

 from that of the typical form, resembling the male in colour and 

 in the shape of the abdomen, but it is much larger than the male. 

 The specimen figured here measures one half inch in length. I 

 collected it near Ithaca, N. Y. 



Although A. trifolium often builds its web in shrubs, I have 

 found it most abundant on rank herbaceous growth in marshy 



places. The web is a 

 large, complete orb. The 

 hub of the web is of the 

 meshed type, but it is 

 very open (Fig. 506); 

 there are only a few 

 turns in the notched 

 zone; and the free zone 

 is not very wide or is 

 wanting. A trapline 

 leads from the hub to a 

 retreat, which is usually 

 in a folded leaf or a 

 bunch of leaves above 

 and at one side of the 

 orb (Fig. 507). The 

 spider waits in its re- 

 treat fortheensnarement 

 of its prey. 



1 have not found 

 the egg-sac of this spe- 

 cies in the field; but 

 a confined spider made 

 one which was a very 

 delicate sac attached to 

 a leaf and was so translucent that the contained mass of eggs 

 could be seen through its walls (Fig. 508). 



THE THREE HOUSE ARANEAS 



Fig. 508. EGG-SAC OF ARANEA TRIFOLIUM 



Among the round-shouldered Araneas there are three common 

 species that are intermediate in size between the two large species 



484 



