208 J. Hi. Emerton, 
The epigynum resembles that of xzzgropal/pis but is shorter and 
stouter, Fig. 5b. 
The male palpus also resembles that of migropalpis, Fig. 5a, which 
I have figured from a Long Island specimen belonging to Mr. Banks. 
Pardosa diffusa, new. (Plate VI, figures 6, 6a, 6b.) 
Two males from Ipswich and Hyde Park, Mass. are distinguished 
from the ordinary male mgropalpis, 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 mgvropalpis, 
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 nzigropalpis 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 uigropalpis and albopatella 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 9 to 9c.) 
Female 6mm. and male 4mm. 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, 
