196 



Register. 



Dalyellia Seite 



cuspidata 86 



expedita 87 



fusca 89 



Hallezii 88 



helluo 88 



infundibuliformis ... 86 



paucispinosa 90 



penicilla 88 



picta 90 



rubra 87 



Schmidtii 89 



scoparia 90 



triquetra 87 



viridis 88 



Dalyelliidae 83 



Dendrocoelum .... 154 



infernale 157 



lacteuni 155 



Mrazekii 156 



Derostomum 92 



Dochmiotrema .... 101 



limicola 101 



Dreissena 31 



polymorpha 31 



Dreissenidae .... 31 



Ectoprocta 49 



Ephydatia 180 



fluviatilis 185 



Mülleri 186 



Euporobothria .... 141 



bohemica 141 



dorpatensis 142 



Predericella 55 



sultana 55 



Fuhrmannia 66 



turgida 66 



Gastropoda 1 



Gyratricidae 132 



Gyratrix 132 



hermaphroditus . . . . 132 

 hermaphroditus coeca . . 134 

 hermaphroditus hermaphro- 

 ditus 134 



Holocoela 135 



Hydra 191 



oligactis 193 



polypus ...... 193 



viridissina 192 



vulgaris 192 



Hydrozoa 191 



Hysterophora .... 64 



Jensenia . 

 agilis . 

 quadriculata 

 truncata . 



Iiartetia 

 acicula . 

 aciculoides 

 carychiodes 

 Clessini 



Clessini postera . 

 Clessini spirata . 

 exigua .... 

 gonostoma 

 Heldii .... 

 helvetica . 

 labiata 



Lamperti . . . 

 Lamperti Senefelderi 

 Lamperti taxisi . 

 pellucida . . . 

 pellucida acuta . 

 pellucida ara . 

 pellucida Quenstedti 

 pellucida turbinella 

 pellucida Weinlandi 

 pellucida zolleriana 

 photophila 

 photophila dubia 

 Pürkhaueri 

 Pürkhaueri scalaris 



putei .... 

 putei Rösleri 

 Rougemonti . 

 saxigena 



saxigena danubialis 

 saxigena tenuis . 

 sterkiana . 



suevica 



suevica abnobae 



turricula . 



turrita . . 

 Lecithophora 

 Liporhynchia 

 Lithoglyphus 



naticoides 

 Lophopus 



crystallinus 

 Lymnaea . 



ampla . 



auricularia 



glabra . . 



lagotis . 



