182 PEBLIDES. 



12. NEMOURA NIGRA. 

 Minima ; pedes nigricantes ; alee cinerece. 



Nemoura nigra, Oliv. Enc. Meth. viii. 186, 5. Pictet, Ann. Sci. 

 Nat. xxvi. 384, 4; Mem. Soc. Phys. Geneve, vii. 188; Hist. 

 Nat. Neur. Perl. 373, 9, pi. 47. f. 6, 7. Zett. Ins. Lapp. 

 1055, 6. 



Europe. 



Group 2. 

 Pedes omnino fulvi. 



13. NEMOURA TENUIS. 



Nemoura tenuis, Pictet, Hist. Nat. Neur. Perl. 375, 10, pi. 49, f. 



13. 

 Nemoura nivalis, Fitch. 



a d. New York. Presented by Dr. Asa Fitcb. 



e h. St. Martin's Falls, Albany River, Hudson's Bay. Presented 



by G. Barnston, Esq. 

 i 9 j. York Factory. Presented by Dr. Rae. 



Sub-sect. 2. 

 Antennae basi fulvse. Als valde iridescentes. 



14. NEMOURA ANGUSTA. 



Nemoura angusta, Pictet, Hist. Nat. Neur. Perl. 376, 11, pi. 49, f. 

 46. 



Switzerland. 



Section 2. 

 Antennae omnino fulva3. 



15. NEMOURA FLAVICORNIS. 



Nemoura flavicornis, Pictet, Mem. Soc. Phys. Geneve, vii. 187, 16 ; 

 Hist. Nat. Neur. Perl. 378, 12, pi. 49, f. 19. 



Switzerland. 



