556 Wisconsin Academy of Sciences, Arts, and Letters. 
Brachionus angularis Gosse. 
Brachionus angularis caudatus Barrois and Daday. 
Brachionus calyciflorus Pallas — Brachionus pala Ehrenberg. 
Brachionus capsuliflorus Pa\\a,s=Brachionus bakeri Muller. 
Brachionus havanaensis Rousselet. 
Brachionus mollis Hempel. 
Brachionus patulus Muller = Brachionus militaris Ehrenberg. 
Brachionus poly acanthus Ehrenberg. 
Brachionus serious Rousselet. 
Platyias quadricornis (Ehrenberg) — Noteus quadricornis Ehrenberg. 
Keratella cochlearis (Gosse) = Anuraea cochlearis Gosse 
Keratella paludosa (Lucks) = Anuraea paludosa Lucks. 
Keratella quadrata (Muller) = Anuraea aculeata Ehrenberg 
Anuraeopsis fissa (Gosse) — Anuraea hypelasma Gosse. 
Notholca bostoniensis Rousselet. 
Notholca longispina (Kellicott). 
Notholca striata (Muller). 
Mytilina macrocera (Jennings) = Salpina macrocera Jennings. 
Mytilina mucronata (Muller) = Salpina mucronata (Muller). 
Mytilina trigona (Gosse) = Diplax trigona Gosse. 
Euchlanis deflexa Gosse. 
Euchlanis dilatata Ehrenberg. 
Euchlanis lyra Hudson. 
Euchlanis propatula (Gosse). 
Euchlanis pyriformis Gosse. 
Euchlanis triquetra Ehrenberg. 
Lecane aeganea Harring. 
Lecane arcula Harring. 
Lecane brachydactyla (Stenroos) = Cathypna brachydactyla Stenroos. 
Lecane Clara (Bryce) == Distyla Clara Bryce. 
Lecane compta Harring. 
Lecane crepida Harring. 
Lecane flexilis (Gosse) = Distyla flexilis Gosse. 
Lecane hornemanni (Ehrenberg) = Distyla hornemanni (Ehrenberg). 
Lecane inermis (Bryce) = Distyla inermis Bryce. 
Lecane leontina (Turner) == Cathy pna leontina Turner. 
Lecane ligona (Dunlop) = Cathy pna ligona Dunlop. 
Lecane ludwigii (Eckstein) = Distyla ludwigii Eckstein. 
Lecane luna (Muller) = Cathypna lima (Muller). 
Lecane mira (Murray) = Cathypna uiira Murray. 
Lecane nana (Murray) = Cathypna nana Murray. 
Lecane ohioensis (Herrick) — Distyla ohioensis Herrick. 
Lecane papuana (Murray) = Cathypna papuana Murray. 
Lecane ploenensis (Voigt) = Cathypna ploenensis Voigt. 
Lecane pusilla Harring. 
Lecane stokesii (Pell) — Distyla stokesii (Pell). 
Lecane tenuiseta Harring. 
Lecane ungulata (Gosse) — Cathypna. ungulata Gosse. 
