./. n. Emerton — Neic England Epeiridm. 311 



colors grow darker witli age, and in September and October old 

 females are sometimes found of a daik reddish l)rown color with 

 hardly a trace of the summer markings. The sternum is brown witli 

 a yellow stripe in the middle. The under side of the abdomen has a 

 dark area with two yellow curved marks which may be broken into 

 four spots. There are also two yellow spots each side of the spin- 

 nerets. The external part of the epigynum is a large hook flattened 

 at the end. The single opening is directed backward under the 

 hook. The male has the spots on the abdomen plainer than the 

 female. The femur of the second leg is thicker than the others and 

 the tibia is somewhat thickened and curved and has short and stout 

 spines on the inner side. The palpal organ is small and simple. 

 Plate XXXVI, figure 9. 



This is found in many places in Eastern Massachusetts, but not as 

 commonly as domicilioruin. It is very abundant on grass on the 

 Chelsea salt marshes in company with trivittata, where it becomes 

 adult in the latter part of July. 



Epeira trivittata Keyserling, Sitzungsberichte der Isis, Dresden, 1863. 

 Plate XXXIII, figures 16, 16a. Plate XXXVI, figures 2, 3, 5, 8. 



This is one of the most common spiders in New England. It lives 

 usually in grass and low bushes, but seldom on trees or fences. It 

 varies much in size, the large females measuring about 7"'" long, and 

 the first leg 12™"\ Adults however occur not more than half as 

 large. The color is light yellow with brownish rings on the legs 

 at the end of each joint and three indistinct dark stripes on the 

 cephalothorax. The back of the abdomen has a row of light spots 

 in the middle sometimes nearly united into a stripe. Four light spots 

 on the front of the abdomen are more or less connected with the 

 middle row. The edge of the folium is marked by rows of dark 

 brown spots partly surrounded with yellow, and between these and 

 the middle spots the folium is dark brown. The sternum is bright 

 yellow in the middle and the under side of the abdomen is marked 

 as in doniicilioriini with a dark center and four or six yellow spots. 

 The epigynum is covered by a strong hook, with the opening under 

 it directed backward. 



The males resemble the females in color and markings. On the 

 under side of each femur is a single row of long spines. The tibia of 

 the second pair is strongly curved, Plate xxxvi, fig. 2, and has strong 

 spines on the inner side, those near the base being much longer than 

 the others. The palpal organs of trhnttdta. pratensis and domicilii 



Trans. Conn. Acad., Vol. VI. 40 Sept., 1884. 



