1903,] NATURAL SCIENCES OF PHILADELPHIA. 645 



SUPPLEMENTARY NOTES ON SPIDERS OF THE GENERA LYCOSA, PARDOSA, 

 PIRATA AND DOLOMEDES FROM THE NORTHEASTERN UNITED STATES.' 



BY THOMAS H. MONTGOMERY, JR. 



The present is practically a supplement to a former paper by me, 

 entitled "Descriptions of Lycosidse and Oxyopidse of Philadelphia and 

 Its Vicinity," published in these Proceedings in 1902. I have made 

 further collections of specimens from Philadelphia and West Chester, 

 Pennsylvania, the localities I had studied before, and also collections 

 from Crosswicks, Burlington county. New Jersey, and Wood's Hole, 

 Massachusetts. One new species is described, and descriptions of and 

 notes upon various others are given. 



For the comparison of the different species of Lycosidse the char- 

 acters of color and dimensions are of little worth, even the ocular 

 arrangements are subject to variation in some forms, so that the best 

 characters are afforded by the structure of the copulatory apparatus in 

 both sexes, by the form and proportion of the cephalothorax, the rela- 

 tive length of the chelicera, and the relative length of the legs to the 

 length of the cephalothorax. 



The genera are defined as in my preceding paper; it is my purpose 

 later to revise the genera of this family, for the present characteriza- 

 tion of them appears to be artificial, and there nmst ultimately be a 

 classification upon a different set of characters. 



It is noteworthy that the specimens from Wood's Hole average 

 considerably smaller than those of the same species from the other local- 

 ities, so that there the maritime environment woukl appear to retard 

 or check growth. 



1. Lycosa ocreata pulchra Montg. 



Some specimens were secured at Wood's Hole. 



2. Lycosa sepulchralis Montg. 



The original description of this species was based upon a single 9 

 from Philadelphia; since then another 9 has been secured at West 

 Chester, and also a c? from Philadelphia. The d^ differs from the 9 

 in form in that the cephalothorax is relatively much broader across the 



^ Contributions from the Zoological Laboratory of the University of Texas, 

 No. 53. 



