1905.] NATURAL SCIENCES OF PHILADELPHIA, 



301 



A CATALOGUE OF THE ERIGONE^ OF NORTH AMERICA, WITH NOTES AND 

 DESCRIPTIONS OF NEW SPECIES. 



BY CYRUS R. CROSBY. 



The larger part of the material upon which the notes included in 

 this paper are based is in the collection of Cornell University. This 

 collection includes, in addition to the general collection of the Univer- 

 sity, the following special collections : Many of the specimens studied 

 by Nathan Banks in the preparation of "The Spider Fauna of the 

 Upper Cayuga Lake Basin" {Proc. Acad. Nat. Sci. Phila., 1892); a 

 collection purchased by the Entomological Department of Cornell 

 University of Dr. William Fox; a collection made by Prof. J. H. Corn- 

 stock in the Southern States, and a collection made by the writer 

 chiefly near Ithaca, New York. The sequence of genera, with one 

 exception, is that of Simon's Histoire Naturelle des Araignees. As 

 many of the original descriptions are very brief, I have given in the 

 notes such measurements and facts as may be of value in determining 

 the generic position of the species. The types of the new species are 

 in the Cornell University collection. 



I wish to thank Prof. Comstock, under whose direction this paper 

 was prepared, for the opportunity of using the University collection 

 and for many favors and valuable suggestions. I am under obliga- 

 tions to Dr. A. D. MacGillivray and Dr. W. A. Riley for kindly encour- 

 agement and many specimens; to Mr. J. H. Emerton for the loan of 

 specimens; to Dr. William Fox for the loan to the Department of 

 Entomology of Cornell University of parts of types of his species of 

 Ceraticelus; to Mr. P. B. Powell for specimens from California; and 

 to many others for specimens of which no record was made. 



I. A Catalogue of the Erigone.e of North America. 



Ceratinella Em., Trans. Conn. Ac, VI, p. 32. 188£. 

 C. hrunnea Em., I. c, p. 36, PI. VIII, fig. 3. 1882. 



Ceraticelus brunneus E. Sim., Ar. Fr., V, p. 596. I884. 

 Fophocarenum Menge, Preuss. Spinn., p. 198. 1868. 



L. frontalis Banks, Jour. N. Y. Ent. Soc, XII, p. Ill, PI. V, figs. 



1-3. 1904. 

 L. mcEStum Banks {Ceratinella), Proc. Acad. Nat. Sci. Phila., p. 32, 

 PI. II, fig. 58; PL V, fig. 58. 1892. 



