574 EPHEMEKINjfc. 



Ephemera parvula ? Scop. Ent. Cam. 264, 687. 



Cloe pumila, Burnt. Handb. Ent. ii. 2, 799, 4. Pictet, Hist. Nat. 



Neur. Eph. 253, 4, pi. 40, f. 2. Ramb. Hist. Nat. Ins. Neur. 



298, 5. 



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



5. CLOEON TKANSLUCIDA. 



Oculi rufi ; mesothorax fuscus, albo lineatus ; abdomen basi apice- 

 que obscurum, medio pallidius ; seta caudales albee ; pedes 

 albi f alee nonfasciatce nee maculates. 



Cloe translucida, Pictet, Hist. Nat. Neur. Eph. 255, 5, pi. 40, f. 

 3,4. 



a, b. England. 



6. CLOEON ALPINA. 



Oculi maris obscuri ; mesothorax lineis nullis aut pallidis ; abdo- 

 men unicolor, transverse lineatum; setce caudales fuscce ; alee 

 non fasciatec nee maculatce. 



Cloe alpina, Pictet, -Hist. Nat. Neur. Eph. 257, 6, pi. 40, f. 5. 

 Switzerland. 



7. CLOEON MELANONYX. 



Oculi maris obscuri ; mesothorax lineis nullis aut pallidis; abdo- 

 men fuscum invarium ; setce caudales flavce, maculate ; alee 

 non fasciatce nee maculatce. 



Cloe melanonyx, Pictet, Hist. Nat. Neur. Eph. 258, 7, pi. 40, f. 6. 

 Switzerland. 



8. CLOEON LITURA. 



Oculi maris flam ; mesothorax fuscus, nigro vittatus ; alee non 

 fasciatee nee maculatce. 



Cloe litura, Pictet, Hist. Nat. Neur. Eph. 260, 8, pi. 4, f. 13. 

 Switzerland. 



