HYDROPSYCHE. 287 



grayish-fuscous, with snow-white hair ; thorax grayish-fuscous, 

 with a broad, medial stripe of white hair; eyes of the male larger, 

 approximated ; palpi luteo-fuscous ; abdomen fuscous ; feet pale 

 luteous ; anterior wings blackish-gray, densely flecked with white; 

 veins black ; posterior wings cinereous, luteous at base. Male 

 and female. 



Length to tip of wings 13 millim. Alar expanse 25 millim. 



Hob. St. Lawrence River, Canada (Osten Sacken); Washington. 

 I possess a male from N. Red River (Kennicott) which is extremely 

 like this, but the eyes are larger, more approximate, the front 

 hardly broader than the eyes. Is it different? 



2. H. morosa ! 



Hydropsyche morosa Hagen ! 



Luteo-fuscous, with luteous hair; antennse luteous yellow, an- 

 nulated with fuscous ; palpi fuscous ; head and thorax luteo-fus- 

 cous, with luteous hair ; feet luteous ; abdomen fuscous ; anterior 

 wings luteo-fuscous, densely guttated with luteous, veins luteo- 

 fuscous ; posterior wings luteo-cinereous. Male and female. 



Length to tip of wings 10 — 13 millim. Alar expanse 19 — 25 

 millim. 



Hah. St. Lawrence River, Canada ; Washington (Osten Sac- 

 ken) ; N. Red River (Kennicott) ; Trenton Falls, New York 

 (Osten Sacken). 



3. H. phalerata! 

 Hydropsyche phalerata Hagen ! 



Fuscous, with luteous hair ; antennae fuscous, annulated with 

 luteous ; palpi and feet luteous ; head and thorax fuscous, with 

 luteous hair ; anterior wings fuscous, guttated with luteous, with 

 larger spots at the base, pterostigma and anal angle; veins fuscous; 

 posterior wings blackish-gray. Male and female. 



A variety has the anterior wings less spotted, the female ob- 

 scurer. 



Length to tip of wings 7 — 10 millim. Alar expanse 13 — 19 

 millim. 



Hah. St. Lawrence River, Canada ; Washington (Osten Sac- 

 ken) ; Pennsylvania (Zimmerman). 



