28 



Modiola gregaria Goldf. (Greene, Oker, Falkenhagen). 

 Astarte subtetragona Mstr. (Greene, Oker). 



— Voltzii Hoenixigh. (Oker, Greene, Wenzen, Wrisbergholzen.) 

 Lucina lirata Phill. (Greene, Wenzen, Salzgitter, Falkenhagen.) 



— tenuis Dkr. und Koch (Greene). 

 Tancredia dubia Seeb. (Wenzen, Greene.) 

 Cardium concinnum Buch. (Greene.) 



Cyprina trigonellaris Schloth. (Greene, Wenzen, Mainzholzen, Oker.) 

 Thracia Roemeri Dkr. und Koch. (Oker, Greene, Wenzen, Mainz- 

 holzen, Palkenhagen.) 

 Pholadomya transversa Seeb. (Greene.) 

 Goniomya subcarinata Goldf. (Oker, Greene, Falkenhagen.) 

 Gresslya (Pleuromya) unioides Rom, (Oker, Adenberger Stollen, 

 Greene, Wenzen, Mainzholzen, Lühnde b. Hannover.) 



— (Pleuromya) exarata Brauns (Oker, schwarzes Land.) 



— abducta Phill. (Greene, Palkenhagen.) 



Corbula cucullaeaeformis Dkr. und Koch. (Greene, Holzen.) 

 Actaeonina variabilis Brauns. (Oker, Greene.) 



— pulla Dkr. und Koch. (Oker, Greene.) 



— mitraeibrmis Brauns. (Oker, Greene.) 



Dentalium elongatum Mstr. (Oker, Greene, Wenzen, Wrisberg- 

 holzen.) 

 Pleurotomaria Quenstedtii Goldf. (Oker.) 

 Euomphalus Obacrae n. sp. (Oker). 



— minutus Ziet. (Greene.) 



Trochus duplicatus Sow. (Oker, Greene, Holzen.) 

 Turritella opalina Quenst, (Oker, Greene.) 

 Hydrobia Wilkeaoa Brauns (Greene.) 

 Cerithium vetustum Phill. (Oker, Greene.) 



— subcurvicostatum d'Orb. (Greene.) 



— cariniferum Brauns (Oker, Greene.) 

 Chenopus gracilis Mstr. (Greene, Wrisbergholzen.) 



— subpunctatus Mstr. (Greene, Wrisbergholzen, schwarzes Land, 

 Falkenhagen.) 



Aramonites hircinus Schloth, (Oker, Greene, Mainzholzen.) 



— jurensis Ziet. (Greene, Wenzen, Oker, Falkenhagen.) 



— torulosus Schübl. (Hoym, Oker, Falkenhagen.) 



— radians Rein. (Wendhausen, Gr. Sisbeck, Fallersleben, Salz- 

 gitter, Greene, Wenzen, Falkenhagen.) 



— affinis Seeb. (Grassei, Geerzen, Greene, Wenzen, Mainz- 

 holzen, Falkenhagen.) 



— opalinus Bein. (Hoym, Kl. Scheppenstedt, Oker, Hildesheim, 

 Greene, Wenzen, Mainzholzen, Falkenhageu.) 



