392 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.46. 



Collotheca coronetta (Gnhitt) =Floscularia coronetta Oubilt. 



Collotheca cyclops {Cnbitt)= Floscularia cydo-ps Cubitt. 



Collotheca mira (Hudson) = Floscularia mira Hudson. 



Collotheca mutabilis {JIndson)= Floscularia mutabilis Hudson. 



Collotheca ornata (Ehrenberg) =i^?oscu?aria ornata Ehreuberg. 



Collotheca pelagica {liou&=ielet)= Floscularia pelagica Rousselet. 



Collotheca tenuilobata (Anderson) = Floscularia tenuilobata Anderson. 



Stephanoceros fimbriatu^ (Goldfuss). 



Cupelopagis vorax {ljeidy)= Apsilus vorax (Leidy). 



Acyclus inquietus Leidy. 



Order BDELLOIDA. 

 Adineta gracilis Janson. 

 Adineta vaga (Davis) (form major). 

 Philodina acuticornis Murray. 

 Philodina citrina Ehrenberg. 

 Philodina megalotrocha Ehrenberg. 

 Philodina plena (Bryce). 



Rotaria citrina (Ehrenberg) =i?o<i/er citrinus Ehrenberg. 

 Rotaria elongata {Weher)= Rotifer elongatus Weber. 

 Rotaria tnacroceros (Gosse)= Rotifer viacroceros Gosse. 

 Rotaria macrura {Ehrenberg) = Rotifer macrurus Ehrenberg. 

 Rotaria neptunia {YA\renherg)^Actinurus neptunius Ehrenberg. 

 Rotaria rotatoria (Pal\sis)= Rotifer vulgaris Schrank. 

 Rotaria sordida (\Ye3tem)= Callidina sordida Western. 

 Rotaria tardigrada (Ehrenberg) = Rotifer tardus Ehrenberg. 

 Macrotrachela aculeata Milne. 



Macrotrachela crucicornis (Murray) = Callidina crucicornis Murray. 

 Macrotrachela habita (Bryce) = Callidina habita Bryce. 

 Macrotrachela multispinosa Thompson. 

 Macrotrachela musculosa Mihie. 

 Macrotrachela nana (Bryce) = Callidina nana Bryce. 

 Macrotrachela papillosa Thompson. 

 Macrotrachela plicata (Bryce) = Callidina plicata Bryce. 

 Macrotrachela quadricornifera Mihie. 

 Dissotrocha aculeata (Ehrenberg). 

 Dissotrocha macrostyla (Ehrenberg). 

 Mniobia russeola (Zelinka). 

 Habrotrocha angusticollis (Murray). 

 Eabrotrocha annulata (MuiTay). 

 Habrotrocha auriculata Murray. 

 Habrotrocha constricta (Dujardin). 

 Habrotrocha lata (Bryce). 

 Habrotrocha pusilla (Bryce). 

 Scepanotrocha rubra Bryce. 



NOTOMMATA PACHYURA (Gosse). 



Copeus pachyurus Gosse, Hudson and Gosse, Rotifera, 188G, vol. 2, p. 31, pi. 



16, fig. 4. 

 Copeus triangulatus Kirkman, Journ. Royal Micr. Soc, 1906, p. 264, pi, 12, figs. 



10, 11. 

 Notommata pachyura Harking, Bull. 81 U. S. Nat. Mus., 1913, p. 79. 

 This species occurs here nearly the entire year; as all intermediate 

 stages may be found between the humpless and the three-humped 



