208 ./. //. Emerton, 



The epigynum resembles that of nigropalpis but is shorter and 

 stouter, Fig. 5 b. 



The male palpus also resembles that of nigropalpis, Fig. 5a, which 

 I have figured from a long Island specimen belonging to Mr. Banks. 



Pardosa diffusa, new. (Plate VI, figures 0, 6 a, 6 b.) 



Two males from Ipswich and Hyde Park, Mass. are distinguished 

 from the ordinary male nigropalpis, even when running on the ground, 

 by the darker color of the cephalothorax. The middle light band 

 is narrow, and hardly shows in front of the dorsal groove. The 

 light bands at the sides are very narrow and close to the edge. The 

 legs are marked on the femora with broken rings darker and closer 

 together from behind forward, the first femora being almost black. 

 In the palpal organs the basal process is shorter and does not have 

 the long curved hook which crosses the tube in nigropalpis, 

 Fig. 6a. No mature females have been found in company with 

 this, but females found in August without males in Massachusetts 

 and Maine are supposed to belong to the same species. 



The epigynum differs plainly from that of nigropalpis and albo- 

 patella. The anterior pit is rounder and wider, and the transverse 

 posterior end is much wider than in the other species. The females 

 differ in markings from nigropalpis and albo patella in the same way 

 as the males. 



Males from Ipswich, Hyde Park, and Sharon, Mass. 



Females from Medford, Mass., Northern Maine, and Long Is- 

 land, N. Y. 



Pirata insularis, Em. N. E. Lycosidae (Plate VI, fig. 7). 



A new figure is given of the markings of this species from a 

 specimen from Danvers, Mass. 



Pirata arenicola, new. (Plate VI, figures !) to 9c.) 



Female 6 mm. and male 4 mm. long. In the female the lateral 

 light stripes are wide and extend over the edge of the cephalo- 

 thorax, but in the male the edge of the cephalothorax is marked 

 with a broken dark band. The legs are pale and faintly ringed 

 with gray. On the under side the female is entirely pale, and the 

 male has three gray lines on the abdomen. 



The epigynum has two oblique lobes behind slightly pointed on 

 the inner ends. 



The male palpi have the tarsi shorter than in P. sylvestris more as 

 in piraticus. The appendages of the palpal organ are all small, 



