270 NEUROPTERA OP NORTH AMERICA. 



AFATANIA Kolenati. 

 Spurs arranged 1, 2, 4. 



1. A. nigra. 



Potamaria nigra Walk.! Catal. 83, 4. 



Black, with black pile ; beneath, a little clothed with luteous 

 hair; antennae rather short; breast grayish; apices of the abdomi- 

 nal segments, base of the tarsi, and tibiae ferruginous ; wings 

 blackish, clothed with black pile. (From the description of Walker. ) 



Length to tip of wings 9 millim. Alar expanse 16 millim. 



Hah. St. Martin's Falls, Albany River, Hudson's Bay (Barns- 

 ton). 



2. A. pallida ! 



Apatania pallida Hagen I 



Black, with luteous pile; antennae black; feet pale, with black 

 spines, femora fuscous ; anterior wings luteo-hyaline, and the veins 

 same color, with luteous pile and cilia ; posterior wings hyaline. 

 Male. 



Length to tip of wings 8 millim. Alar expanse 15 millim. 



Hah. St. Lawrence River, Canada (Osten Sacken). 



Sub-Family SERICOSTOMIDES. 

 Ocelli absent ; palpi pilose. 



SERICOSTOMA Latreille. 



Spurs arranged 2, 2, 4 ; maxillary palpi of the males 4-jointed, 

 covering the face like a mask. 



1. S. americanum. 



Sericostoma americanum Walk.! Catal. 85, 8. 



Black, clothed with black hair ; antennae twice the length of the 

 body ; feet piceous ; wings blackish-fuscous, pilose ; the anterior 

 wings much longer than the posterior ones. (From the description 

 of Walker.) 



Length to tip of wings 19 millim. Alar expanse 34 millim. 



Hah. Georgia (Abbot). 



