Harring and Myers—The Rotifers of Wisconsin. 
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Testudinella incisa (Ternetz) = Pterodina incisa Ternetz. 
Testudinella parva (Ternetz) — Pterodina parva Ternetz. 
Testudinella patina (Hermann) = Pterodina patina (Hermann). 
Pompholyx sulcata Hudson. 
Trochosphaera solstitialis Thorpe. 
Order FLOSCULARIACEA 
Floscularia conifera (Hudson) = Melicerta conifera Hudson. 
Floscularia janus (Hudson) = Melicerta janus Hudson. 
Floscularia ringens (Linne) — Melicerta ringens (Linne). 
Limnias ceratophylli Schrank. 
Limnias melicerta Weisse = Limnias annulatus Bailey. 
Liinnias myriophylli (Tatem). 
Ptygura brachiata (Hudson) = Oecistes brachiatus Hudson. 
Ptygura crystallina (Ehrenberg) = Oecistes crystallinus Ehrenberg. 
Ptygura longipes (Wills) = Oecistes umbella Hudson. 
Ptygura mucicola (Kellicott) = Oecistes mucicola Kellicott. 
Ptygura pilula (Cubitt) = Oecistes pilula (Cubitt). 
Ptygura velata (Gosse) = Oecistes velatus Gosse. 
Pseudoecistes rotifer Stenroos. 
Sinantherina socialis (Linne) = Megalotrocha alboflavicans Ehrenberg. 
Sinantherina semibullata (Thorpe) = Megalotrocha semibullata Thorpe. 
Lacinularia flosculosa (Muller) =Lacinularia socialis Ehrenberg. 
Octotrocha speciosa Thorpe. 
Conochilus hippocrepis (Schrank) = Conochilus volvox Ehrenberg. 
Conochilus unicornis Rousselet. 
Conochiloides dossuarius Hudson. 
Conochiloides natans (Seligo.) 
Order COI LOTHKCACEA 
Collotheca algicola (Hudson) = Floscularia algicola Hudson. 
Collotheca ambigua (Hudson) = Floscularia ambigua Hudson. 
Collotheca campanulata (Dobie) = Floscularia campanulata Dobie. 
Collotheca cornuta (Dobie) = Floscularia campanulata Dobie. 
Collotheca coronetta (Cubitt) = Floscularia coronetta Cubitt. 
Collotheca edentata (Collins) = Floscularia edentata Collins. 
Collotheca mutabilis (Hudson) = Floscularia mutabilis Hudson. 
Collotheca ornata (Ehrenberg) = Floscularia ornata Ehrenberg. 
Collotheca pelagica (Rousselet) = Floscularia pelagica Rousselet. 
Collotheca trilobata (Collins) = Floscularia trilobata Collins. 
Stephanocerus fimbriatus (Goldfuss)— Stephanoceros eichhornii Ehren¬ 
berg. 
Cupelopagis vorax (Leidy) = Apsilus vorax (Leidy). 
Acyclus inquietus Leidy. 
