184 LIST OF FIGURES. 



FIGURE VOL. I. PAGE 



103. Tiedemannia, ^ ........... 188 



104. Doliolum, Y, from Newport . 188 



105. Doliolum, ^ from Florida 188 



106. Doliolum, ^, from Florida, with well-developed zobids .... 189 



107. Pyrosoma, 189 



108. Appendicularia, greatly magnified . ....... 189 



109. House of Appendicularia, greatly magnified 189 



110. Solitary form of Salpa Caboti, ^ 5 - 189 



111. Chain of Salpa Caboti, somewhat enlarged ...... 190 



112. Firoloidea, \ 191 



113. Argonauta, f (Verrill) 191 



114. Spirula Peronii, \ 191 



115. Shell of Argonauta, f (Verrill) 191 



116. Sagitta, \ 192 



117. Tomopteris, \ 192 



118. Nebalia, \ 193 



119. Globigerina bulloides, from the surface, l-^ (Challenger) . . . 194 



120. Pterocanium charybdeum, highly magnified (Miiller) .... 195 



121. Hialomma, -\ 5 ~ 195 



122. SphaeTozoum, J 195 



123. Halobates wiillerstorfn, | (Challenger) 179 



124. Hastigerina pelagica, - 8 T 5 (Challenger) . . . . . . . 196 



125. Noctiluca, magnified 197 



126. Eucope diaphana, f 197 



127. Lizzia grata, magnified 197 



128. Mnemiopsis Leidyi, somewhat reduced 199 



129. Zoea of Carcinus, greatly magnified ....... 206 



130. Panopus embryo, greatly magnified ....... 206 



131. Zoea of Porcellana, f 206 



132. Pelagic refuse, magnified 207 



133. Trichodesmium erythrseum, f 209 



134. Coccosphere, - 6 -f- (Challenger) 209 



135. Rhabdosphere, If* (Challenger) 209 



136. Gulf-weed, ... 210 



137. Velella mutica, vascular canal filled with yellow cells (liver cells), 



magnified . 214 



137 a. Single yellow cell, magnified 



138. Velella medusa, with yellow cells, magnified 215 



139. Phronima sedentaria, in its Doliolum house, f 215 



X. TEMPERATURES OF THE CARIBBEAN, GULF OF MEXICO, AND WESTERN AT- 

 LANTIC. (Figs. 140-167.) 



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



(U. S. Hydrographic Office) 216, 217 



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



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



Figs. 143-167. TEMPERATURE SECTIONS (U. S. C. S.). 



143. Campeche Bank, Yucatan, to Cape San Antonio 219 



144. Virgin Gorda to Sombrero ......... 221 



145. Point Rosalie, Dominica, to Point du Diable, Martinique . . . 222 



