I'M 



Cincinnati Society of Natural History. 



Subkingdom ARTICULATA. 



Class Arachnida. 

 Diplodontus mendax, Duge's. 



Class Crustacea. 

 Brancbipus stagnalis, Schaeffer. 

 Bosminus longirostris, Baird.. 

 Camptocercus raacouris, Baird. 

 Chydorus sphericus, Leach. 

 Cyclops quadricornis, If filler. 

 Cypris fusca, Miiller. 

 Cypris vidua, Miiller. 

 Daphne pulex, Miiller. 

 Diaptomus castor, Westw. 



Class Annelida. 



Brachionus bakeri, Hill. 

 Brachionus pala, Hill. 

 Brachionus urceolaris, Hill. 

 Chastonotus larus, Ehr. 

 Dinocharis pocillum, Ehr. 

 Hydatina senta, Ehr. 

 Monacerca ratlus, Ehr. 

 Pleurotrocha gibba, Ehr. 

 Rotifer vulgaris, Cuv. 



Subkingdom CGELENTERATA. 

 * Class Hydrozoa. 



Hydra fusca, Linn. 

 Hydra viridis, Linn. 



Subkingdom PROTOZOA. 



Class Spongida. 

 Spongilla fluviatilis. Lam. 



Class Infusoria. 

 Astasia nematodes, Ehr. 

 Coccudina costata, Duf. 

 Englena longicanda, Ehr. 

 Englena viridis, Ehr. 

 Kerona polyporum, Miiller. 

 Monas lens, Miiller. 

 Paramecinum hyalinum, Hill. 

 Stintor muleri, Oken. 

 Trachleocerca olor, Ehr. 

 Trachleocerca viridis, Ehr. 

 Vorticella microstoma, Linn. 

 Vorticella nebulifera, Linn. 



Class Rhizopoda. 

 Actinophiys sol, Ehr. Arcella vulgaris, Ehr. 



Amoeba , Ehr. Difflugia proteiformis, Leclere. 



J. H. Hunt. M.D.. Cincinnati, Oh 



