430 PROCEEDINGS OF THE ACADEMY OF [1890. 



lighter than above. When dry the markings on the eephalothorax 

 are very indistinct and it appears nearly uniform reddish-brown. 

 The epigynum has a triangular depression on the posterior margin, 

 the edges of which are horny, somewhat swollen and dark colored. 

 Length of female 9 mm., 1st leg 10 mm., 2nd leg 11 mm., ord leg 

 9 mm., 4th leg 13 mm. 



It gives me great pleasure to dedicate this species to Dr. George 

 Marx, of Washington, D. C, who has greatly assisted me in my 

 study of the Araneae. 



This spider was collected in York Co, Penn., only one specimen 

 was secured. 



Genus PARDOSA. 



The species of Pardosa are all small. The legs are long and 

 slender, armed with long spines. The dorsal eye area occupies about 

 one quarter of the eephalothorax and the eyes are large for the size 

 of the spider. The following key will serve to separate the species 

 that I have found in Pennsylvania and New Jersey. 

 /. eephalothorax uniform black, shining. P. nigra 



II. Ce])halothorax with a light median band. 



a. Band contracted just before the dorsal groove. 



b. A distinct light median band on the abdomen. 



e. Several distinct transverse light bands on the pos- 

 terior part of the abdomen, male palpus black. 



P. nigropalpis. 

 cc. Transverse bands obsolete, male palpus with the 

 patella white. P. albopatella. 



bh. No distinct median band on the abdomen. 



P. lapidicina. 

 aa. Band not contracted. P. bilineata. 



P. nigropalpis Emerton. 



Female. Cephalothorax brown with a broad gray central band, 

 broadest just behind the eyes then contracted and widened again 

 around the dorsal groove and narrowed posteriorly. There are two 

 narrow gray submarginal bands. The region around the eyes is 

 black. 



Abdomen dark brown with a median gray stripe reaching nearly 

 to the middle and followed by several transverse gray stripes, becom- 

 ing shorter posteriorly. Legs gray, indistinctly banded. The male 

 is similar but darker with the markings more obscure. The palpi 



