3l5i J. H. Emerton — New England Epeir idee. 



oriim are much alike. The tube and all the appendages are small 

 and crowded together near the end of the organ. The plainest differ- 

 ence between this and the male domiciliorum is in the shape of the 

 tibia of the second pair of legs. Plate xxxvi, figs. 1, 2. 



This species seems to mature earlier in the summer than domicili- 

 orum^ adults of both sexes being abundant from June to August. 

 In open places and especially toward the latter part of the summer 

 the colors become darker and it resembles the next species. 



White Mountains ; Massachusetts ; Connecticut and southward. 



Epeira domiciliorum Hentz. 



Probably E. Hentzii Keys., Sitziingsberichte der Isis, Dresden, 1863. 

 Plate XXXIII, figure 17. Plate XXXVI, figures 1, 4. 



This species is larger than trivitUda and measures 10 to lo'"*" in 

 length, and the first legs 15 to 20""". The cephalothorax has three 

 dark stripes more distinct than in trivittata. The femora are orange 

 red and the other joints light yellow with wide dark brown rings at 

 the ends and middle of each joint. The abdomen has a straight 

 light stripe along the middle of the back from which a pair of less 

 distinct branches extend at right angles on each segment as far as 

 the edges of the folium. In the end of each of these light branches 

 is a black spot and between them dark brown areas which become 

 lighter toward the sides where they divide into fainter branches. In 

 the autumn the colors become darker and in some individuals the 

 light markings are hardly visible and occasionally the back is almost 

 white with the brown marks on the sides very faint. The sternum is 

 black with a bright yellow middle stripe. The under side of the 

 abdomen is black in the middle, with four In-ight yellow spots and 

 two fainter ones near the spinnerets. The epigynum is covered by a 

 large hook with the opening on its under side, as in trlvittata. 



The male is marked like the female with the dark markings usually 

 more distinct. The palpi are like those of trlvittata. The plainest 

 difference between this and trivittata is in the shape of the tibia of 

 the second ])air of legs. In trivittata. this joint is strongly curved 

 outward, while in domiciliorum it is nearly straight. In domicili' 

 ornm, the thick spines on the inner side are nearly all of the same 

 size, while in trivittata the spines near the basal end are much longer 

 than the others. PI. xxxvi, figs. 1 and 2. 



This spider inhabits fences and plants in gardens much more com- 

 monly than trivittata and is also found in open wootls on low trees, 

 but seldom in orass. Massachusetts and Connecticut and southward. 



