560 PROCEEDINGS OF THE ACADEMY OF [AugUSt, 



Length of the third leg, d, 20 mm. ; ?, 21.5 mm. 



Leugth of fourth leg, cT, 27 mm. ; $, 29 mm. 



Dimensions of the largest of several ? ? iu the McCook collec- 

 tiou, from an unknown locality in Pennsylvania. — Length of 

 cephalothorax, 9.2 mm. 



Length of abdomen, 10.5 mm. 



Length of first leg, 24 mm. 



Length of second leg, 23 mm. 



Leugth of third leg, 22.5 mm. 



Length of fourth leg, 31 mm. 



Color in Life, ?. — Cephalothorax above black, a very narrow 

 brownish-buff median band extending from the anterior to the 

 posterior eye-row, and continued as a somewhat broader band 

 backward to the end of the thorax ; a broader submargiual band 

 of the same color, and some scattered buff hairs on the sides. 

 Sternum deep black. Abdomen above deep dusky-brown, but 

 not as dai'k as the cephalothorax, a black spot at each autero-lateral 

 margin, between these and bounding them a light V-shaped mark 

 with its apex directed cephalad, and diverging backward from the 

 limbs of this mark a series of indistinct small light spots, some of 

 them connected by transverse lines of the same color; sides deep 

 blackish with numerous short streaks of buff-brown ; venter pale 

 brown anterior to lung slits, margins of the latter and a spot at the 

 posterior edge of the epigynum black, behind the gill slits buff- 

 brown with numerous small black spots that become confluent at the 

 spinnerets, the larger of them arranged mainly in three narrow 

 lines converging toward spinnerets. Margins of epigynum black. 

 Spinnerets reddish-brown. Chelicera brownish-black, a red promi- 

 nence at the sujero-latei-al angle. Labium and maxillce black. 

 I^egs brown with indistinct buff anuulations on the femora, patellie 

 and tibice; ventral surface of cox£e black. Palpi brown like the 

 legs, with very indistinct anuulations. 



The d^c? are colored very much like the ? 9, but are somewhat 

 more distinctly marked. The cephalothorax of one alcoholic speci- 

 men has a short narrow buff band on each side parallel to the 

 median stripe and extending from the posterior eyes to the middle 

 of the cephalothorax. The sternum has sometimes a pale median 

 line. The abdomen above dark brown with a broad black median 

 band extending to behind the middle, and a pair of marginal 



