^9g Deutsche Südpolar-Expedition. 



45. Ptycliocylis acuminata v. Daday var. semireticulata Biedermann 457 



46. Ptychocylis calyx Brandt 458 



47. Ptycliocylis undella (Ostenfeld und Schmidt) 458 



48. Ptychocylis nervosa (Cleve) 459 



Gattung Rhabdonella (Brandt) 460 



49. Rhabdonella spiralis (Fol) 461 



50. Rhabdonella amor (Cleve) 463 



51. Rhabdonella apophysata (Cleve) 465 



Gattung Petalotricha Fol 466 



52. Petalotricha ampulla Fol 466 



Gattung Undella v. Daday 467 



53. Undella hyalina v. Daday 468 



54. Undella marsupialis Brandt 469 



55. Undella monocollaria n. sp 470 



56. Undella tricollaria n. sp 470 



57. Undella claparedei (Entz) 471 



58. Undella hemisphaerica n. sp 472 



59. Undella lachmanni v. Daday 473 



60. Undella messinensis Brandt 474 



61. Undella filigera n. sp 474 



62. Undella heros Cleve 476 



63. Undella armata Brandt 477 



64. Undella tenuirostris Brandt 478 



Gattung Tintinnus 479 



65. Tintinnus glockentögeri (Brandt) 480 



18. Tintinnus acuminatoides n. sp 480 



66. Tintinnus undatus ( Jörgensen) 481 



67. Tintinnus bulbosus Brandt 481 



68. Tintinnus fraknoi v. Daday 482 



69. Tintinnus lusus-undae Entz 482 



70. Tintinnus inquilinus (0. Fr. Müller) v. Daday 483 



71. Tintinnus datura Brandt 484 



72. Tintinnus amphora var. brasiliensis n. var 485 



72 a. Tintinnus amphora var. dadayi Jörgensen 486 



73. Tintinnus palliatus Brandt 488 



74. Tintinnus steenstrupi Claparede und Lachmann 488 



Literaturverzeichnis 488 



Tafelerklärung 489 



