574 EPHEMERINA. 



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 translucida. 



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

 que obscurum, medio pallidius ; setce caudales albce ; pedes 

 albi ; alee nonfasciatce nee maculatce. 



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; seta caudales fusccc ; alec 

 non fasciatcc 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, maculatce ; alee 

 non fascialce nee maculata. 



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

 Switzerland. 



8. Cloeon litura. 



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

 fasciatcc nee maculatce. 



Cloe" litura, Pictet, Hist. Nat. Neur. Eph. 260, 8, pi. 4, f. 1—3. 

 Switzerland. 



