1903,] NATURAL SCIENCES OF PHILADELPHIA. 



579 



by yellowish marks), fourth segment except anterior and posterior 

 margins, and fifth except two rather obscure yellowish spots, all black; 

 apex of fifth with a short fringe of silvery- white hair; venter dark with 

 six pale marks. 



Hab. — Los Angeles county, Cal., bearing number 397, one in U. S. 

 Nat. Museum, marked "through C. V. Riley," presumably collected 

 by Coquillett. Three others, marked "So. Cal.," are in Coll. Acad. 

 Nat. Sciences Phila. The venation and other characters show that 

 this cannot be the 9 of N. bifurcata. 



