1902.] NATURAL SCIENCES OF PHILADELPHIA. 569 



Genus PARDOSA C. Koch. 

 The following key will aid in determining the species here 

 described : 



^, — Sternum darker than the coxce. 



I. — Light markings on the posterior half of the dorsum of 

 the abdomen usually distinct, d" palpus black on all the 



joints, nigropalpis. 



II. — Light markings on the posterior half of the doi-sum of 

 the abdomen indistinct, the patella of the c? palpus 



^,y^[iQ minima. 



B_ — Sternum not darker than the coxse. 



L— Median light band of the cephalothorax bordered by 



black bauds, scito. 



II. ]Median light band of the cephalothorax not bordered 



by black bands, solivaga 



21. Pardosa nigropalpis Emerton. (PI. XXX, figs. 32-34.) 



Pardosa nigropalpis Emerton, 1885. 



Pardosa nigropalpis Emerton, Marx, 1889. 

 Pardosa nigropalpis Emerton, Stone, 1890. 

 Pardosa nigropalpis Emerton, Banks, 1893. 



(Numerous specimens from Philadelphia, Chester county, Lan- 

 caster county, Pa. ; Pt. Pleasant, N. J. ) 



Eyes. First row shorter than second, its lateral eyes slightly 



higher. Eyes of the second row more than their diameter apart. 

 Third row broadest, its eyes slightly smaller than those of the 

 second row, and almost as far from each other as from the second 

 row. Doreal eye area fully one-quarter the length of the cephalo- 

 thorax. 



j^o,.„i. —Cephalothorax in front less than one-half its greatest 

 tran.sverse diameter, highest at the third pair of eyes, sides of the 

 . head vertical. Chelicera barely as long as the head is high in 

 front, weak. Sternum di.stinctly longer than broad. Legs slender 

 with long spines and few hairs. Superior spinnerets longer than 

 the inferior. 



Dimensions. — Length of cephalothorax, d", 2.2 mm. ; ?, 

 2.4 mm. 



Length of abdomen, d, 2.2 mm.; ?, 2.5 mm. 



Length of first leg, d, 7 mm. ; ?, 8.2 mm. 



Length of second leg, d, 6.6 mm. ; 9, 7.2 mm. 



Length of third leg, d, 6.2 mm. ; 9, 7.2 mm. 



Length of fourth leg, d, 10 mm. ; 9, 12.1 mm. 



