1902.] NATURAL SCIENCES OF PHILADELrHIA. 581 



Color in Alcohol, (^. — Cephalothorax as in tlie ?, but| darker 

 and withont a submargiual light stripe. Sternum darker than in 

 9, brownish with a narrow median light stripe. Abdomen also 

 darker above, with the same general pattern bnt the light spots 

 larger and more conspicnous ; sides brownish streaked with yellow, 

 no dark spots near the spinnerets ; venter brownish-yellow. Legs 

 yellow, femora of the first and second pairs deep brown above and 

 below. Palpi yellow, femora deep brown. 



Comparisom. — Qnite closely related to P. elegans Stone, but the 

 epigyna are quite different. The ? 9 also show considerable 

 resemblance to those of P. liber, while the d^c? are readily distin- 

 guished both by color and by the structure of the palpus ; but there 

 is a difference in the epigynum, the submarginal light thoracal 

 stripe is distinct in liber, which has generally dark markings on the 

 abdominal venter and lacks the laige dark spot near the spinnerets. 

 28. Pirata elegans Stone. (PI. XXX, fig. 46.) 

 Pirata elegans Stone, 1890. 



(4 9 9, types, York county. Pa., Stone Coll.) 



Eyes. — First i-ow shorter than the second, its lateral eyes lower 

 and slight iv larger, its middle eyes approximated. Eyes of 

 second row largest, their diameter apart. Third row widest, its 

 eyes on slight tubercles (as are the second eyes) and nearer the 

 second row than each other. Dorsal eye area a little more than 

 one-fifth the length of the cephalothoi-ax. 



Form. — Superior spinnerets double the length of the inferior. 

 Cephalothorax flattened above, highest at the posterior eyes, in front 

 not more than one-third its greatest transverse diameter. Chelicera 

 rather weak, their length not much more than 1^ times the height 

 of the head in front. Sternum distinctly longer than broad. 

 Legs rather stout. 



Dimensions. — Length of cephalothorax, 2.5 nnii. 



Length of abdomen, 3 mm. 



Length of fii-st leg, 6 mm. 



Length of second leg, 5.5 mm. 



Length of third leg, 6 mm. 



Length of fourth leg, 9.3 mm. 



Color in Alcohol. — Cephalothorax clear reddish-brown, an inter- 

 rupted narrow blackish submarginal stripe just above the yellow- 

 margin, and fine black lines radiating from the dorsal groove; a 



