J. H. Emerton — JVe^o England Epeiridm. 307 



is white with tliree wide dark brown lines. The legs are wliite with 

 a dark brown ring at tlie end of each joint and in the middle of the 

 fonrth feiunr. The sternnin is dark brown with sometimes a light 

 stripe in the middle. 



The male is not more than 6 or V""" long, and light colored. Tlie 

 markings are similar to those of the female bnt all fainter or indis- 

 tinct. The legs are long, and the spines long and black. The 

 tibife of the second legs are not modified as in some species. The 

 palpal organ of the male is small with a short, stout terminal hook 

 and a small basal process with a long black curved tooth. 



The males are found in August and September and the females get 

 their full size and lay eggs in October. 



They live on bushes, oftenest on small alders around the borders of 

 open, wet ground. They seldom stand in the web in the daytime 

 but occupy a tent made of two or three living leaves drawn together 

 and lined with silk. The spider holds a thread leading to the center 

 of the web. 



Hentz's E. ohesa and E. aureola are probably light individuals of 

 this species, and E. septuna may be an old female of large size Avith 

 the colors faded and abdomen shrunken after laying her eggs. I 

 have seen a few in this condition, in which the light markings were 

 all browner and the dark markings paler than in younger spiders. 



The resemblance between the females of this species and the Euro- 

 pean E. quadrata is very close. Usually the abdomen of trifoliuni 

 is rounder, the white markings smaller, and the edges of the folium 

 less distinct than in quadrata. The finger of the epigynum of tri- 

 foliuni is not widened at the base but is of about the same size from 

 base to tip. The finger of the epigynum of quadrata is wide at the 

 base and tapers toward the tip. Plate xxxv, figs. 19, 20, 21, 22. 



The male of trifoUicut is much smaller than that of quadrata. 

 The tibia of the second legs is not thickened. The palpi are not 

 more than half as large and the process at the base of the palpal 

 organ is small as in most species, while in quadrata it is very large, 

 nearly as long as the rest of the palpal organ. Plate 3, fig. 15. 



Canada, New England, Ncav York and southward. 



Epeira marmorea (Cierck) Thor. 



Plate XXXIII, figure 2. Plate XXXV, figure 17. 



Female 10 or 12'""' long ; first leg 15'""'. The cephalothorax is 

 dull yellow with indistinct darker lines in the middle and at the sides. 

 The femur of each leg is yellow or oftener bright orange with a 



