294 NEUROPTERA OF NORTH AMERICA. 



8. P. lucidus ! 



Polycentropus lucidus Hagen! 



Luteous, subnude ; autennse luteo-fuscous, obsoletely annulated ; 

 palpi luteous ; head and thorax luteo-fuscous, prothorax yellow ; 

 feet luteous ; wings fusco-hyaline, with fuscous veins, the anterior 

 ones subnude, in part a little clothed with luteous pile. Male. 



Length to tip of wings 7 millim. Alar expanse 13 millim. 



Ilab. Trenton Falls (Osten Sacken) ; Pennsylvania (Zimmer- 

 man). 



The specimen may have been defaced, and is possibly immature. 



PSYCHOMYIA Latreille. 



Spurs arranged 2, 4, 4 ; second, third and fourth articles of the 

 maxillary palpi equal, longer than the first ; wings rather acute, 

 narrow ; ocelli absent ; apex of the abdomen of the female acute, 

 recurved. 



1. P. flavida ! 



Psychomyia flavida Hagen I 



Yellow, with ochreous hair ; antennae whitish, with obsolete 

 annulations ; palpi and feet whitish; head and thorax luteous; 

 anterior wings yellow, with dense ochreous hair and cilia ; poste- 

 rior wings cinereous, acute, with cinereous hair. 



Length to tip of wings 5 millim. Alar expanse 9 millim. 



Hah. St. Lawrence River, Canada (Osten Sacken) ; Washing- 

 ton (id.). 



2. P. parva. 



Bi/droptila? parva Walk.! Catal. 134, 12. 



Testaceous ; dorsum of the abdomen piceous ; wings whitish. 

 (From the description of Walker.) 



Length to tip of wings 4 millim. Alar expanse 6 millim. 



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

 ston). 



The type is very much mutilated ; it certainly is not an Hydrop- 

 tila. Does it belong to this genus ? 



