272 NEUROPTERA OF NORTH AMERICA. 



Length to tip of wings 6| millim. Alar expanse 11 millim. 

 Hob, St. Domingo. 



BRACHYCENTRUS CURTIS. 

 Spurs arranged 2, 3, 3. 



1. B. fuliginosus. 



BracJiycentrusfuliginosus Walk.! Catal. 88, 7. 



Black, with hoary hair; antennae long, ferruginous, apices of the 

 abdominal segments, and the legs testaceous; palpi testaceous, with 

 the apex blackish ; the anterior wings grayish-fuscous, veins ferru- 

 ginous ; posterior wings cinereous. (From the description of 

 Walker.) 



Length to tip of wings 14 millim. Alar expanse 26 millim. 



Hub. St. Martin's Falls, Albany River, Hudson's Bay (Barn- 

 ston). 







2. B. incanus ! 

 JBrachycentrus incanus Hagen ! 



Black; sparingly clothed with hoary hair; antennas black, feet 

 pale, femora black; anterior wings long, grayish-hyaline, with some 

 luteous spots, and sparse luteous pile ; veins gray ; posterior wings 

 grayish-hyaline. Female. 



Length to tip of wings 13 millim. Alar expanse 24 millim. 



Hub. Washington, April (Osten Sacken). 



It is similar to B. subnubilus Curtis. 



SILO CURTIS. 

 Spurs arranged 2, 4, 4. 



1. S. californicus ! 



Silo californicus Hagen I 



Fuscous; antennae stout, brownish-black; head and thorax black, 

 with yellow pile ; feet fuscous; anterior wings fuscous, with fuscous 

 pile, veins blackish fuscous ; some yellow, hairy streaks between 

 the longitudinal veins; posterior wings fuscous. Female. 



Length to tip of wings 17 millim. Alar expanse 32 millim. 



Hab. North California. 



