654 PROCEEDINGS OF THE ACADEMY OF [Oct., 



Color in alcohol. — CephalotJwrax above yellow, a broad brown stripe 

 from each posterior eye backward to the end of the thorax, a narrow 

 blackish line on each side near the margin, extreme margin black; black 

 around the posterior eyes and between the middle e\^es, forehead yellow, 

 long white hairs above the first eye row. Sternum pale yellow about the 

 color of the coxse, with black spots on the lateral margins. Ahdomen 

 above with a pale orange, broad median band extending its entire 

 length, in the anterior half of this band a somewhat darker band bor- 

 dered on each side by small black spots; sides grayish with short 

 ])lack streaks; venter with a black line from each lung-book to the 

 spinnerets, the space enclosed by these lines silvery-gray. Spinnerets 

 yellowish. Chelicera and maxilloi of the same yellowish color as the 

 cephalothorax, labium blackish. All the legs greenish-yellow below, 

 the two posterior pairs darker ; coxie and trochanters above each with 

 2 or 3 black spots, and femora above each with a short black stripe on 

 the proximal portion. Pedipalpi yellowisli, unspotted. 



20. Pirata humicolus Montg, 



Numerous specimens from Cross wicks. 



21. Pirata liber Montg, 



Specimens from West Chester, Crosswicks and Wood's Hole. Those 

 from Wood's Hole compose a geographical race characterized by 

 smaller size (largest 9 with a cephalothoracal length of only 2.6 mm.), 

 and by the proportionately greater extent of the dorsal eye area, which 

 is somewhat less than one-quarter the length of the cephalothorax, 



22. Dolomedes urinator Hentz, 

 Specimens from Crosswicks. 



23. Dolomedes idoneus Montg. 

 Specimens from Crosswicks. 



24. Dolomedes sexpunctatus Hentz. 



One mature 9 from W^ood's Plole. 



Eyes. — The first row about the diameter of its eyes from the second 

 and fully four times their diameter from the anterior edge of the head, 

 broader than the second row, its lateral eyes slightly higher than the 

 middle. Eyes of the second row barely their diameter apart, slightly 

 smaller than those of the third row. Third row l^roadest, its eyes on 

 eminences, this row about the diameter of one of its eyes behind the 

 second row. Dorsal eye area less than one-fifth the length of the cepha- 

 lothorax. 



Form. — Cej^halothorax distinctly longer than broad, highest behind 

 its middle. Length of the chelicera about one and a third times the 



