184 



LIST OF FIGURES. 



FIGURE VOL. I. PAGE 



103. Tieclemaimia, ^ ........... 188 



104. Dolioluin, ^, from Newport 188 



105. Dolioluin, | , from Florida . 188 



100. Dolioluin, |, from Florida, with well-developed zooids .... 189 



107. Pyrosoma, . 189 



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



109. House of Appendicularia, greatly magnified ...... 189 



110. Solitary form of Salpa Caboti, ^ . .... 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 (Yen-ill) 191 



116. Sagitta, \ 192 



117. Tomopteris, \ . 192 



118. Nebalia, \ . . ...... 193 



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



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



121. Hialomma, - 2 t 5 195 



122. Sphserozoum, \ 2 . . . . .195 



123. Halobates wiillerstorffi, | (Challenger) 179 



124. Hastigerina pelagica, - 3 T 5 (Challenger) ....... 196 



125. Noctiluca, magnified .......... 197 



126. Eucope diaphana, -| .......... 197 



127. Lizzia grata, magnified .......... 197 



128. Mnemiopsis Leidyi, somewhat reduced ....... 199 



129. Zoea of Carciuus, 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, lf- (Challenger) . 209 



136. Gulf-weed, . 21 



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



magnified . .... -14 

 137 a. Single yellow cell, magnified 



138. Velella medusa, with yellow cells, magnified . 215 



139. Phronima sedentaria, in its Dolioluin house, \ 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) 

 Temperature sections (curves) 



141. 



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



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 



216, 217 

 217 

 218 



219 

 221 



222 



