644 



Seite 



Merista pleheja Sow. 551 



Nucleospira Uns Schnur 552 



Uncites gryphus Schloth 553 



Retzia prominula F. Roem 554 



Betzia Pelmensis Kaiser . . . . _ 556 



Retzia ferita Buch 557 



Retzia longirostris Kayser 558 



Retzia lepida Goldf 559 



Retzia Uns Phill . 561 



Spirifer cultrijugatus F. Roem. 562 



Spirifer laevicosta Valenc 564 



Spirifer speciosus auct 566 



Spirifer eUgans Steining 569 



Spirifer subcuspidatus Schnur 572 



Spirifer mediotextus Arch. Vern. var 573 



Spirifer SchuUzei Kayser 575 



Spirifer undiferus F. Roem 575 



Spirifer curvatus Schloth 577 



Spirifer aviceps Kayser 578 



■\ Spirifer simpUx Phill 579 



Spirifer concentricus Schnur 580 



jff Spirifer glaber Mart 581 



j[f Spirifer lineaius Mart 582 



-f-f Spirifer pac?iyrhynchus M. V. K . . 582 



•f Spirifer Urii Flemming 584 



Spirifer canaliferus Valenc. var 585 



Spirifer Davidsoni Schnur 586 



^Spirifer Verneuili MuRCH 587 



Spirifer hians Buch 589 



Spiriferina? macrorhyncha Schnur 590 



Spiriferina? acuUata Schnur 592 



Cyrtina heterocUta Depr 594 



Cyrtina undosa Schnur 597 



Orthis striatula Schloth 598 



Orthis subcordiformis Kayser 600 



Orthis opercularis M. V. K 601 



Orthis tetragona F. Roem 604 



Orthis Eifliensis Vern 606 



Orthis canalicula' Schnur 607 



Orthis venusta Schnür 609 



