EPHEMERIN£. 575 



9. Cloeon fasciata. 

 Alee distinctissime fasciatce. 



Cloe' fasciata {Kollar, MSS.) Pictet, Hist. Nat. Neur. Eph. 262, 9, 

 pi. 41, f. 4. 



Brazil. 



10. Cloeon undata. 

 Alee quatuor maculis nebulosis. 



Cloe undata, Pictet, Hist. Nat. Neur. Eph. 264, 10, pi. 41, f. 6. 



Switzerland. 



B. Alae duae. 



11. Cloeon diptera. 



Pallide rufescente-cinerea, segmentorum marginibus fuscescentibus; 

 setis fusco punctatis ; alls hyalinis, costa jiavescente-fusco, albo 

 marmorata, posticis nullis. 



Ephemera diptera, Linn. Syst. Nat. Ed. 12, ii. 907, 11. Gmel. Ed- 

 Syst. Nat. i. 5,2630, 11. Beg. Ins.\\. 2, 650, 5, pi. 18, f. 5— 

 7, fern., 8 — 10 mas. Retz, Gen. Deg. 57, 184. Schrank, 

 Faun. Boic. 1947. De Vill. Linn. Ent. iii. 22,21. Rossi, 

 Faun. Etrusc. 677. Oliv. Enc. Meth. vi. 420, 16. Fabr. Ent. 

 Syst. ii. 71, 16. Latr. Hist. Nat. Crust, et Ins. xiii. 99, 19. 

 Shaw, Gen. Zool. vi. 253. Zelt. Ins. Lapp. 1046. Blanch. 

 Hist. Nat. Ins. iii. 54, 11. 



Ephemera annulata, Mull. Zool. Dan. Prodr. 143, 1652, fem. 



Ephemera striata ? Mull. Zool. Dan. Prodr. 143, 1651, mas? 



Cloeon pallida, Leach, Edin. Encycl. ix. 137. 



Cloeon marmoratum, Curt. Phil. Mag. 1834, 121. 



Cloeon obscurum, Curt. Phil. Mag. 1834, 121, Subimago. 



Cloeon unicolor? Curt. Phil. Mag. 1834. 



Cloeon dipterum, Steph. III. Brit. Ent. Mand. vi. 67, 1. 



3 D 2 



