ILLUSTRATIONS XI 



Pago 



51 . Hymenam'phiastra cyanocrypta de Laubenfels 88 



52. Anaata spongigartina de Laubenfels 90 



53. Anaata brepha de Laubenfels 91 



54. Eurypon asodes de Laubenfels 93 



55. Microciona microjoanna de Laubenfels 94 



56. Microciona parthena de Laubenfels 96 



57. Clathriopsamma pseudonapya de Laubenfels 97 



58. Jia jia de Laubenfels 98 



59. Isociona lithophoenix (de Laubenfels) 100 



60. Plocamia karykina de Laubenfels 101 



61. Plocamia igzo, new species 102 



62. Ophlitaspongia pennata (Lambe) calif orniana, new variety 104 



63. Acarnus erithacus de Laubenfels 105 



64. Hemectyon hyle de Laubenfels 108 



65. Cy anion neon de Laubenfels 110 



66. Gellius edaphus de Laubenfels 112 



67. Gellius textapatina de Laubenfels 113 



68. Halichoclona gellindra, new species 114 



69. Xeslospongia diprosopia (de Laubenfels) 115 



70. Xeslospongia vanilla (de Laubenfels) 116 



71. Ilaliclona ecbasis de Laubenfels 118 



72. Haliclona enamela de Laubenfels 119 



73. Haliclona lunisimilis de Laubenfels 120 



74. Haliclona cinerea (Grant) 121 



75. Spongia idia, new species 122 



76. Dysidea amhlia de Laubenfels 123 



77. Verongia thiona de Laubenfels 125 



78. Aplysilla glacialis (Dybowski) 126 



79. Aplysilla polyraphis de Laubenfels 127 



Report on the Hexactinellid Sponges Collected by the 

 United States Fisheries Steamer "Albatross" in the 

 Northwestern Pacific during the Summer of 1906 



By Yaichiro Okada 



1 . Pheronerna ijimai, new species 9 



2. Hyalonema (Cyliconema) hozawai, new species 23 



3. Hyalonema (Coscinonema) ovatum, new species 27 



4. Farrea kurilensis, new species 31 



5. Farrea watasei, new species 35 



6. Farrea beringiana, new species 40 



7. Hyalascus attenuatus, nevv' species 70 



8. Aulosaccus fissuratus, new species 74 



9. Aulosaccus albatrossi, new species 79 



10. Aulosaccus tuberculatus, new species 83 



11. Aulosaccus solaster, new species 86 



12. Acanthascus pachy derma, new species 95 



13. Staurocalypius rugocruciatus, new species 100 



14. Rhabdocalyplus borealis, new species 104 



15. Rhabdocalyplus heteraster, new species 108 



16. Rhabdocalyplus bidentaius, new species 114 



