184 



LIST OF FIGURES. 



Figure 



103. 

 104. 

 105. 

 106. 

 107. 

 108. 

 109. 

 110. 

 111. 

 112. 

 113. 

 114. 

 115. 

 116. 

 117. 

 118. 

 119. 

 120. 

 121. 

 122. 

 123. 

 124. 

 125. 

 126. 

 127. 

 128. 

 129. 

 130. 

 131. 

 132. 

 133. 

 134. 

 135. 

 136. 

 137. 



137 a. 



138. 



139. 



Vol. I. 



Tiedemannia, \ ...... 



Doliolum, ^°, from Newport ..... 



Doliolum, |, from Florida ..... 



Doliolum, &, from Florida, with well-developed zobids 

 Pyrosoma, \ ....... 



Appendicularia, greatly magnified .... 



House of Apjjendicularia, greatly magnified . 

 Solitary form of Salpa Caboti, 3 y 5 - .... 



Chain of Salpa Caboti, somewhat enlarged 

 Firoloidea, \ ....... 



Argonauta, § (Verrill) ...... 



X. 



140 



141 

 142 



Shell of Argonauta, | (Verrill) .... 



Sagitta, \ . . . . . . 



Tomopteris, \ . 



Nebalia, •* 



Globigerina bulloides, from the surface, i-^ (Challenge 

 Pterocanium charybdeum, highly magnified (Midler) 

 Hialomma, 2 t 5 . 

 Sphserozoum, ^ ...... 



Halobates wiillerstorffi, | (Challenger) . 

 Hastigerina pelagica, 3 T 5 (Challenger) 

 Noctiluca, magnified ..... 



Eucope diaphana, | ..... 



Lizzia grata, magnified ..... 



Mnemiopsis Leidyi, somewhat reduced . 

 Zoea of Carcinus, greatly magnified 

 Panopus embryo, greatly magnified 



Zoea of Porcellana, | 



Pelagic refuse, magnified .... 



Trichodesmium erythrseum, | . 

 Coccosphere, - 6 -£° (Challenger) 

 Rhabdosphere, J-f- - (Challenger) 

 Gulf-weed, -^ . 



Velella mutica, vascular canal filled with yellow 

 magnified ...... 



Single yellow cell, magnified 

 Velella medusa, with yellow cells, magnified . 

 Phronima sedentaria, in its Doliolum house, j 



Temperatures of the Caribbean, Gulf of Mexico, and Western At- 

 lantic. (Figs. 140-167.) 

 Bottom temperatures, Western North Atlantic, J. R. Bartlett, U. S. N. 



(TJ. S. Hydrographic Office) 216, 217 



Temperature sections (curves) ........ 217 



Bottom temperatures of the Atlantic (U. S. Hydrographic Office) . 218 



cells 



(liver cells), 



PAGE 



188 

 188 

 188 

 189 

 189 

 189 

 189 

 189 

 190 

 191 

 191 

 191 

 191 

 192 

 192 

 193 

 194 

 195 

 195 

 195 

 179 

 196 

 197 

 197 

 197 

 199 

 206 

 206 

 206 

 207 

 209 

 209 

 209 

 210 



214 

 214 

 215 



215 



Figs. 143-167. Temperature Sections (U. S. C. S.). 



143. Campeche Bank, Yucatan, to Cape San Antonio 



144. Virgin Gorda to Sombrero . . . • . 



145. Point Rosalie, Dominica, to Point du Diable, Martinique 



219 

 221 



222 



