LIST OF FIGURES. 183 
FIGURE Vor. I. PAGE 
60. Contour map of the Gulf of Maine (U. S. C. S) . 4 + 103 
61. Contour chart of the bottom of the ond US; 5. Hydrographic Of- 
fice i i A $ . 108 
VI. Tue PERMANENCE OF CONTINENTS AND OF OckANIO BASINS. (Fig. 62.) 
Geologieal map of the Eastern United — after C. H. Hiteh- 
cock. 4 » . ‘ ` " . 129 
62. Archean map of North Amenica (Dana) . ` 4 ` x ‘ . 130 
IX. Tue PELAGIC FAUNA AND FroRa. (Figs. 63-139.) 
63. Arachnactis, embryo of Edwardsia, 49 . s : . » 172 
64. Asteracanthion, starfish Pluteus, greatly magnified . n v ‘ me m 
64a. Strongylocentrotus, sea-urchin Pluteus, greatly magnified . x « xia 
65. Cyphonautes, snam of Bryozoón, NEN magnified i i " . 172 
66. Littorina embryo, ` A , ` " + n] 
67. Embryo of loligo, 20 . Td ` " . ATA 
68. Tornaria, embryo of Balanoglossus, greatly mé agnified ‘ i è . OS 
69. Pilidium, larva of Nemertean, greatly magnified — . " e . 173 
70. Leucodora larva, greatly magnified . ` . . ` . . + MO 
Ti. Polygordius larva, 2° j " , , ì . ‘ + AND 
72. Dactylopus larva, greatly inagnified.. " ¿ ‘ . š è « 173 
73. Barnacle, Balanus Fila. greatly magnified . ` " . è . ALTA 
74. Squilla embryo, 42 . i h " R i . 174 
75. Hermit crab, A larva, greatly. magnified A " è m . 174 
76. Peneus embryo, gréatly magnified . e , i e x . » MA 
77. Pelagic fish egg, 4° . A é + SITO 
78. Plagusia. Pelagic symmetr ical embryo of kranapasent "wie t. + TO 
79. Rhombodichthys, flounder stage of Plagusia, + x i i 2 . BETO 
80. Embryo fish, with lateral organs, 16 i " 4 È i " . 176 
81. Phronima, $ . ; ^ 5 ; à i 3 H ‘ d s 6 
82. Leptocephalus 2 . , ` i i i è . (NET 
83. Polyelonia frondosa, + (Agaábis) . ( 4 : é ‘ ‘ . Abo 
84. Copepod, PN m: M ‘ a ` i : . ‘ . « 018 
85. Mysis,& . i i , . ‘ à > ` à «39 
86. Porpita, 4. . i à e . 180 
87. Physalia Arethusa, Postughess man- odiati $ (Agnasis):... A ‘ i 181 
88. Lepas anatifa, floating barnacle, slightly reduced — . ‘ Y s FSI) 
89. Agalma elegans, 4 (Fewkes) . ‘ v ` i s x è . 182 
90. Cunina discoides, magnified — . $ ‘ i a 3 i 4 « Se 
91. Velella mutica, $ . 1 ‘ 5 A ; A r . 183 
92. Pterophysa grandis, 4 (Fewkes) i $ ‘ f A 4 ` . 184 
93. Linerges mercurius, 2 f $ , ; : i ; A . 186 
94. Glossocodon tenuirostris, magnified ‘ i . 186 
95. Fourth stage of Glossocodon tenuirostris Lo gently magnified ` . 186 
96. Sixth stage of Glossocodon tenuirostris larva, greatly magnified — . . 186 
97. Janthina, slightly reduced , ‘ à ` ‘ j ` i . 186 
98. Glaucus, enlarged  . j ì ‘ i i y y ^ " . 186 
99. Hyalea, 2. i i i E i 3 1 è P à à oat 
100. Atlanta; M. i € è ‘ . . s s x i (UST 
101. Styliola, 5 i 1 i a ‘ . " x 1 3 , . 188 
102. Pleuropus, 4? . i A i . " " . . è . 188 
