104 HYDROPSYCHID^. 



8. Philopotamus alternans. 



Niger, cano-hirtus ; antennis basi, abdominis segmentis apice pedi- 

 busque fulvis ; alee ajiticee fusca, cano confertim irroratcE, 

 poslicce cinerece. 



Black, clothed with hoary hairs : antennse tawny at the base : 

 hind borders of the abdominal segments and legs tawny : fore-wings 

 brown, mostly thickly covered with hoary dots; hind-wings gray. 

 Length of the body 3^ lines; of the wings 11 lines. 



a. St. Martin's Falls, Albany River, Hudson's Bay. Presented by 

 G. Barnslon, Esq. 



9. Philopotamus indecisus. 



Nigricans, subtus testaceus ; antenna testacecs, fusco annulatcs ; 

 pedes iestacei ; alcB cinerea, anticce confertim flavo guttatce. 



Blackish, testaceous beneath : palpi testaceous, tawny towards 

 the base: antennae testaceous, with a brown ring on each joint: 

 legs testaceous : wings gray ; fore-wings slightly brown, adorned 

 with numerous pale yellow dots of various size. Length of the 

 body 3 lines ; of the wings 10^ lines. 



a. St. Martin's Falls, Albany River, Hudson's Bay. Presented by 



G. Barnston, Esq. 



b. Nova Scotia. From Lieut. Redman's collection. 



10. Philopotamus eeciprocus. 



Nigricans ; antennis pedibusque testaceis ; palpi ferruginei, basi 

 nigri ; alee anticce suhfuscce, Jiavo confertim irroratcB, postica 

 subcinerece. 



Blackish: palpi ferruginous, black towards the base : antennae 

 and legs testaceous: fore-wings slightly brown, with numerous pale 

 yellow dots of various size ; hind-wings pale brown. Length of the 

 body 3 lines ; of the wings 13 lines. 



Closely allied to P. indecisus. 



a. North America ? Presented by the Entomological Club. 



11. Philopotamus DisTiNCTus. 



Niger ; palpi et pedes obscure testacei ; alee anticce fusco-cinerece 

 Jiavo confertim guttata;, posiicce cinerece. 



