560 EPHEMERINJS. 



15. BAETIS AURANTIACA. 



Rufo-testacea ; segmentis abdominalibus ulrinque linea obliqua 

 nigra ; alee graciles, hyalince. Long. 3^ lin. 



Baetis aurantiaca, Burm. Handb. Ent. ii. 801, 4. Pictet, Hist. 

 Nat.Neur.Eph.19l. 



Germany. 



16. BAETIS LONGICAUDA. 



Ochraceo-lutea ; pedibus pallidioribus ; setis longissimis ; geniculis 

 abdominisque segmentorum marginibus fuscis. 



Baetis longicauda, Steph. III. Brit. Ent. Mand. vi. 63, 3. Pi del, 



Hist. Nat. Neur. Eph. 193. 

 Baetis mellea, Curt. Phil. Mag. 1834, 121. 



England. 



17. BAETIS ELEGANS. 



Ochraceo-flava ; abdomine pallide subcastaneo ; tarsorum articulis 

 apice nigris ; alis subflavescentibus, costa saturatiore. 



Baetis elegans, Curt. Phil. Mag. 1834, 120. Steph. III. Brit. Ent. 

 Mand. vi. 64, 6. Pictet, Hist. Nat. Neur. Eph. 193. 



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



18. BAETIS CARNEA. 



Incarnata; abdomine saturatiore; setis immaculatis ; alis elon- 

 gatis, hyalinis, costa subrosea, venis subfuscis. 



Baetis carnea, Curt. Phil. Mag. 1834, 121. Steph. TIL Brit. Ent. 

 Mand. vi. 65, 10. Pictet, Hist. Nat. Neur. Eph. 193. 



England. 



