HYDROPSYCHE. 289 



8. H. dubitans. 



Hydropsyche dubitans Walk.! Catal. 113, 34. 



Piceous, with pale hair ; antennae testaceous, the apex black ; 

 pectus ferruginous ; palpi, feet and apices of the abdominal seg- 

 ments testaceous ; wings cinereous, the anterior ones with fuscous 

 hair and some paler spots, composed of yellow pile. (From the 

 description of Walker.) 



Length to tip of wings 11 millim. Alar expanse 23 millim. 



Hob. North America (Doubleday). 



8, H. maculicornis. 



Hydropsyche maculicornis Walk.! Catal. 113, 36. 



Blackish, hairy ; antennae testaceous, annulated with fuscous ; 

 palpi pale; pectus ferruginous; feet testaceous; anterior wings 

 fusco-cinereous, with obsolete irrorations ; posterior wings cine- 

 reous. (From the description of Walker.) 



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



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

 ston). 



10. H. robusta. 



Hydropsyche robusta Walk.! Catal. 114, 37. 



Ferruginous, hairy ; antennae, palpi and feet testaceous ; thorax 

 bivittated with piceous ; wings cinereous, somewhat covered with 

 yellow hair; the anterior wings with pale spots, which are clearer 

 at the margin. (From the description of Walker.) 



Length to tip of wings 8 millim. Alar expanse 17 millim. 



Hab. North America ? 



11. H. transversa. 



Hydropsyche transversa Walk.! Catal. 114,38. 



Testaceous; antennae black, testaceous at base; abdomen black, 

 apices of the segments pale ; feet white ; wings whitish, the ante- 

 rior ones on the front margin and at the veins, yellow, with nume- 

 rous, transverse cinereous spots, part of which are confluent ; the 

 apex subcinereous, spotted with pale ; veins pale yellow. (From 

 the description of Walker.) 



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



Hab. Georgia (Abbot). 

 19 



