308 IlEV. A. E. EATON OX EECENT EPHEMEEID^ OK MAYFLIES. 



Leptophlebia : Europe, 5 sp. (one o£ them ranging into Turkestan) ; temperate N. America, 6 sp. and 

 others undescribed ; Chili, 1 sp. (undescribed). 



Bhtsturus : temperate N. America, 1 sp. ; Scandinavia, perhaps 1 sp. 



Choroterpes : continental Europe, 1 sp. ; Arizona, 1 sp. (undescribed). 



Thraulus : southern Europe, 1 sp. ; Indo-Malayan region, 2 sp. ; tropical America, 4 sp. and others 

 undescribed. Probably uell represented in hot climates. 



Adenophlehia : Cape Colony, 1 sp. 



Hagenu/us : Cuba, 1 or 3 sp. 



HabrujMebia : temperate and southern Europe, 6 sp. ; New Hampshire (undescribed). 



CaUiarcys : southern Europe, 1 sp. 



Ephenierdla : Europe, 3 sp. ; N. America, 6 sp. ; Japan, 1 sp.; China, 1 sp. (undescribed). Several 

 nameless genera related to this are found in N. America. 



Tehganodes : Ceylon, 2 sp. 



Tricorythus : Egypt, 1 sp. ; Malay Archipelago (undescribed) ; Cape Colony, 1 sp. ; perhaps south of 

 France, 1 sp. 



Leptohtiphes : Argentine Republic, 1 sp. 



Canis : Europe, 8 or 9 sp. ; Egypt, 1 sp. (undescribed) ; Morocco, 1 sp. (undescribed) ; LakeNyassa, 

 2 sp. ; Cape Colony, 1 sp. (undescribed) ; Ceylon, 1 sp. ; N. America, 2 sp. and several others 

 undescribed. 



Prosopintoiua: middle and southern Europe, 1 sp. ; Madagascar, 1 sp. (Fly undescribed.) 



Baetis : Europe, 14 sp., one of them ranging to Madeira and the Canaries, another to Canada, also one 

 undescribed ; Greenland, 1 sp. (?) ; Egypt, 1 sp. (undescribed) ; N. America, 6 sp. and up- 

 wards ; central and S. America, 2 sp. or perhaps 3 ; Indo-Malay I'egion, 3 or more sp. ; Aus- 

 tralia (undescribed). A kindred genus is known by the nymph from Peru. 



Centroptilum : Europe, 8 sp., one of them ranging into Canada ; N. America, Arizona, 1 sp. (unde- 

 scribed) ; Cuba, 1 sp. 



Cloeon : Europe, 5 sp., one of them ranging eastward to Armenia and Japan, and southwestwards to 

 Madeira and TenerifFe ; Indo-Malay region, 4 sp. (one undescribed) ; China, 1 sp., perhaps 

 a European ; Australia, 1 sp. (undescribed) ; Cape Colony, 1 sp. (undescribed) ; N. Ame- 

 rica, 3 sp. ; Argentine Republic, perhaps 1 sp. ; Chili, 1 sp. (undescribed). 



Calliba'tis : throughout America ; N. America, 3 or 4 sp. and I undescribed (one of the former 

 ranging southwards to Central America) ; Cuba and Central America, 3 or 4 sp. (one un- 

 described); S. America, 2 sp. ; Australia, 1 sp. (undescribed). 



Colobiiriscus : Australia, I sp.; New Zealand, 1 sp. ; N. America, 1 sp. (undescribed). 



Chirotuiietes : Europe, 1 sp. ; N. America, 4 sp. 



Metamonius : Chili, 1 sp. 



Ameletus : Europe, 1 sp. ; N. America, 3 sp. 



Dipteromimus : Japan, 1 sp. 



Siphlurus : Europe, upwards of 4 sp. ; N. America, G sp. (the genus is probably represented by many 

 other species) ; E. Amurland, 1 sp. ; Japan, 1 sp. (undescribed) ; New Zealand, perhajw I sp. 



Oniscigaster : New Zealand, 1 sp. 



Bcetisca : N. America, 1 sp. 



Gen. . A remarkable nymph from Chili [PI. LIIL] is worthy of mention here. 



Ametropus : Europe, 1 sp., perhaps ranging to the Caucasus and Armenia. 



Atopopus : Borneo, 1 sp. 



Thahrosphyrus : Java and the Pliilipjnncs, 2 sp. 



Epeorun : Em-ope, 4 sp. ; Armenia, 1 sp, (undescribed) ; Himalaya, 1 sp. (provisionally included) ; 

 N. America (undescribed). 



