182 PERLIDES. 



12. Nemouea nigra. 

 Minima ; pedes nigricantes ; alcB cinerece. 



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

 Nat. xxvLZS4, 4; 3Iem. 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. 



1—3. 

 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,j. York Factory. Presented by Dr. Rae. 



Sub-sect. 2. 

 Antennae basi fulvae. AIeb valde iridescentes. 



14. Nemoura angusta, 



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

 4—6. 



Switzerland. 



Section 2. 

 Antennae omnino fulvse. 



15. Nemoura flavicornis. 



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

 Hist. Nat. Neur. Perl. 378, 12, pi. 49, f. 1—9. 



Switzerland. 



