TABLE OF CONTENTS. 



I. INTRODUCTION '^''u 



II. DESCRIPTION OF THE SPECIES COLLECTED BY THE "ALBATROSS" . . 17 



Geodidae ........... ... 17 



SiDONOPS ........ ..... 18 



S. californica (Plate 5, figs. 1-.37) 18 



S. angulata ............ 24 



var. megana (Plate 12, figs. 1-8, 16, 17, 19, 20; Plate 13, figs. 1-12, 22-25; 



Plate 14, figs. 1-6, 16-22; Plate 15, figs. 1-4, 7-9, 11) . 24 

 var. microana (Plate 12, figs. 11-15, 18, 21, 22; Plate 13, figs. 13-17, 21; 



Plate 14, figs. 7-9; Plate 15, fig. 10) .... 24 



var. orthotriacna (Plate 12, figs. 9, 10; Plate 13, figs. 18-20; Plate 14, figs. 



10-15, 23-30; Plate 15, figs. 5, 6, 12) .... 24 



S. oxyastra (Plate 6, figs. 1-23; Plate 7, figs. 1-20; Plate 8, figs. 1-15) . . 40 



S. bicolor (Plate 9, figs. 1-19; Plate 10, figs. 1-15; Plate 11, figs. 1-17) . . 46 



Geodia ............... 55 



G. variospiculosa ............. 55 



1M2 - var. intermedia (Plate 17, figs. 2.3-26, 34-40, 49; Plate 18, figs. 8, 10, 13-20, 



22, 27; Plate 19, figs. 9-11, 19, 20, 22, 24, 31) . . . 55 

 var. micraster (Plate 17, figs. 27-33, 41-48, 50; Plate 18, figs. 1-7, 9, 11, 12, 



21, 23-26; Plate 19, figs. 1-8, 12-18, 21, 23, 25-.30, 32) . 55 



G. japonica (Plate 37, figs. 15-30; Plate 38, figs. 1-29; Plate 39, figs. 1-41) . . 72 



G. ataxastra ............. 79 



var. angustana (Plate 43, figs. 9-25, 28-38; Plate 44, figs. 1-12; 14-49) . . 79 



var. latana (Plate 43, figs. 26, 27; Plate 44, fig. 13) 79 



G. mesotriaena .............. 96 



. ,var. paehana (Plate 21, fig. 1 ; Plate 23, figs. 3, 5, 6, S, 9; Plate 24, figs. 3, 5, 9) 96 



var. microana (Plate 23, figs. 1-2; Plate 24, figs. 2, 6, 7, 10-13, 16, 19, 21) 96 



'"571^ var. megana (Plate 21, figs. 2-6; Plate 22, figs. 1-10; Plate 23, figs. 4, 7, 10-25; 96 



Plate 24, figs. 1, 4, 8, 14, 15, 17, 18, 20, 22-32; Plate 25, 



figs. 1-11) 96 



G. agassizii (Plate 26, figs. 1-21; Plate 27, figs. 1-19; Plate 2S, figs. 1-28; Plate 29, 

 figs. 1-17; Plate 30, figs. 1-17; Plate 31, figs. 1-10; Plate 



32, figs. 1-46; Plate 33, figs. 1-14; Plate 34, figs. 1-17) 113 



Plciz. --G. mesotriaenella (Plate 34, figs. 18-26; Plate 35, figs. 28-35) .... 151 



G. breviana (Plate 35, figs. 1-27; Plate 36, figs. 1-12) 155 



G. ovis (Plate 40, figs. 1-30; Plate 41, figs. 1-20; Plate 42, figs. 1-40; Plate 43, 



figs. 1-8) 161 



G. micropora (Plate 36, figs. 13-36; Plate 37, figs. 1-14) 170 



G. amphistrongyla (Plate 20, figs. 1-41) 175 



Z /.- G. lophotriaena (Plate 47, figs. 9-36; Plate 48, figs. 1-34) 181 



G. acanthtylastm (Plate 45, figs. 1-39; Plate 46, figs. 1-21; Plate 47, figs. 1-8) 188 



G. media (Plate 16, figs. 1-21; Plate 17, figs. 1-22) 194 



Geodinella 205 



G. robusta 205 



var. megasterra (Plate 1, figs. 1-4, 16, 18-24; Plate 2, figs. 1, 3; Plate 3, 



figs. 3, 4, 7, 9; Plate 4, figs. 1, 4-7, 13, 21, 22) . . . 205 

 var. carolae (Plate 1, figs. 5-12, 17; Plate 2, figs. 4-7, 9-11; Plate 3, fig. 1; 



Plate 4, figs. 2, 3, 8-12, 14-20) 205 



var. megaclada (Plate 1, figs. 13-15; Plate 2, figs. 2-8; Plate 3, figs. 2, 5, 6, 8; 



Plate 4, figs. 23-25) 205 



7 



