162 PROCEEDINGS OF THE ACADEMY OF [Way, 



is placed upon these characters as indices of relationship. They have 

 not previously been used in the definition of genera. It has been 

 necessary to introduce a provisional terminology, perhaps sufficient 

 for present descriptive purposes, for parts of the copulatory organs. 

 Careful comparative studies on the morphology of the palpal organs 

 of male spiders are much needed to give us a consistent general 

 terminology. 



As here considered the portion of the family Lycosidce in the fauna 

 of America north of Mexico includes eight genera: Allocosa, Pardosa, 

 Schizocosa, Lycosa, Trahea,Sosippus, Sosilaus and Pirata. Lycosa is more 

 comprehensive than the other genera and its species fall into a number 

 of natural but mostly intergrading groups. Of these groups one in 

 pari corresponding to Trochosa of some authors is most divergent 

 and compact. (See further under Lycosa.) Altogether, in the neigh- 

 borhood of one hundred and fifty specific names have been erected for 

 the forms under these genera ; but of these not more than half are really 

 "good." The species that I have been able to regard as distinct and 

 recognizable are distributed among the genera as follows: Trahea, 

 Sosippus and Sosilaus, e&ch with one; Allocosa, five; Schizocosa, three; 

 Pirata, nine; Pardosa, seventeen ; Lycosa, thirty. 



Of the material studied mention should be made first of the section of 

 Lycosidce in the rich collection of Aranea. at Cornell University, for the 

 privilege of using which and for other unfailing courtesies I am deeply 

 obliged to Prof. J. H. Comstock. The Cornell collection includes not 

 only species from New York State and other parts of the North, but 

 also a good representation of forms from the South and a number of 

 species from the West. My own collection consists of specimens 

 collected in California, Utah and New York by myself, and of a 

 large number from many different localities obtained through others. 

 Among those to whom it is a pleasure to make acknowledgments for 

 specimens are the following: M. Simon, France (specimens from 

 Florida); Rev. F. O. P. Cambridge, England; Mr. B. H. Guilbeaux, 

 Louisiana; Miss Annie Jones, Georgia; Mr. A. M. Bean, Iowa; Mr. C. 

 O. Crosby, New York; Mr. T. H. Scheffer, Kansas; Mr. G. W. Peckham, 

 Wisconsin ; Dr. O. M. Howard, Utah; Prof. T. H. Montgomery, Texas. 

 For the loan of specimens and collections for study I owe my thanks to 

 Mr. J. H. Emerton, Boston; Mr. Samuel Henshaw, of the Museum of 

 Comparative Zoology, Boston; Prof. C. M. Weed, New Hampshire; 

 Prof. John Barlow, Rhode Island ; ]\Ir. Charles Fuchs, of the California 

 Academy of Sciences; Prof. M. T. Cook, Indiana; and Dr. W. M. 

 Wheeler, of the American Museum of Natural Histoi-v, New York. 



