EPHEMERTN^. 573 



Baetis bioculata, Steph. III. Brit. Exit. Mand. vi. 65, 12. 

 Cloe bioculata, Pictet, Hist. Nat. Neur. Eph. 244, pi. 34, 35. 



a — d. England. Presented by F. Walker, Esq. 

 e—f. England. 



g. St. Martin's Falls, Albany River, Hudson's Bay. Presented bv 

 F. Walker, Esq. 



2. Cloeon Rhodani, 



Maris oculi obscuri ; mesothorax fuscusvel niger, nonnunquam alba 

 lineatus ; abdomen basi apieeqiie obscurum, apud medium 

 pallidius ; seta caudales fusco maculatce ; pedes anteriores 

 fusci vel fusco maculati ; alee non fasciatce nee maculatce. 



Cloe Rhodani, Pictet, Hist. Nat. Neur. Eph. 248, 2, pi. 36—39. 

 Switzerland. 



3. Cloeon fuscata. 



Oculi fusci ; mesothorax omnino niger ; abdomen basi apiceque 

 obscurum, medio pallidius ; seta caudales albce ; pedes atbi, 

 non maculati ; alee non fasciatce nee maculatce, posticce me- 

 diae res. 



Ephemera fuscata, Linn. Syst. Nat. Ed. 12, ii. 907, 6. De Ft/7. 



Linn. Ent. iii. 19, 8. Oliv. Enc. Meth. vi. 419, 9. Fair. 



Ent. Syst. ii. 70, 1 1 . Gmel. Ed. Syst. Nat. i. 2629, 6. Walkn . 



Faun. Par. ii. 9, 8. Schr. Faun. Boic. 1946. Turt. Syst. 



Nat. iii. 394. Latr. Hist. Nat. Ins. xiii. 97, 11. 

 Baetis fuscata, Steph. III. Brit. Ent. Mand. vi. 62, 13. 

 Cloe fuscata, Pictet, Hist. Nat. Neur. Eph. 251, 3, pi. 40, f. 1. 



Europe. 



4. Cloeon pumila. 



Oculi fusci ; mesothorax omnino niger; abdomen basi a]>iceque 

 obscurum, medio pallidius ; setce caudales "albce ; pedes albi, 

 anteriores suturis fuscis; alee non fasciatce nee maculatce, 

 posticce parvce. 



3d 



