254 



THE AMERICAN MONTHLY 



[Aug. 



MoUusca 



Paludina vivipera 



Limna'us stagualis 



Belanus 



Unio crassus 



Flanorbis cornea 



Plauorbis 



I'aludiua 



Paludiua 



Helix horteusis 

 *Mussel 

 *Luiiibricus terrestes (earthworm) 



Lumbrichus variegatus 



*Lumbricu3 limosus 

 * " teuuis 



A marine worm or auuelid — 



Psyrmobraucbus proteuaus 

 *Marine worms 



Planariaus 



*Planariau limacina 



* " torva 



Plauariau-thysauozuon tiiberculata 

 ■ Triton cristata 



* " toeniatus 

 *Bulb pautlieriuus 

 *Hyla eurojjea 

 *I'"rogs & toads 



*Nai8 serpentina 

 *Nais littoralis 



Various opertiilaria 

 Couchophtliirus auodontae 

 Epiatyliri coarctatae 

 Podophrya elougata 

 Epistylis plicatilis 

 Epistylis balanorum 

 Couchopbthirus 

 Epistylis enchlorum 

 Scypbidia limacina 

 Phychostonmm 

 Auoplophrya vermicularia 

 Concbopbtbirus 

 Anoplopbrya uiytie 

 Plagiotoma lumbrici 

 Anoplopbr3a striata 

 Hoplitopbrya lumbricus 



'■ falcit'era 



Hoplitopbrya secans 



'* securiformis 



Anoplopbrya clavata 



' ' cocbleariformis 



Licbnopbora cobuii 

 Anoplopbrya prolifera 

 Balautidium medusarum 

 Trichodina digitodiscus 

 Urceolaria mitra 

 Colvoluta scbulzie 

 Pulsatella convoluta 

 Hoplitopbrya recurva 

 Hoptopbrya planiarium 



" uncinata 

 Licbnopiiora auerbachii 

 iSpirucbona t!intinabulum 

 Tricbodina pediculus 

 Balantidium elongatum 

 Haptopbrya gigantca 

 Opaliiia oI)trigona 

 Opalina ranarum 

 Opalina dimidiata 

 Opalina iutestinalis 

 Balantidium eutozoon 

 " elongatum 



" duodeui 



Nictotberus cordilbrmis 

 Anoploi)brya uaidos 



" nodulata 



