184 



LIST OF FIGURES. 



FiGUEE 



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, 1", from Newport 



Doliolum, |, from Florida 



Doliolum, ^ 



J, from Florida, with well-developed zobids 

 Pyrosoma, ^ ..... . 



Appendicularia, greatly magnified . 



House of Appendicularia, greatly magnified 



Solitary form of Salpa Caboti, ^j^- . 



Chain of Salpa Caboti, somewhat enlarged 



Firoloidea, ^ . 



Argonauta, | (Verrill) .... 



Spirula Peronii, \ 



Shell of Argonauta, | (Verrill) 



Sagitta, ^ ..... . 



Tomopteris, ^ . 



Nebalia, i 



1_2 



Globigerina bulloides, from the surface, i-^° (Challenger 

 Pterocanium charybdeum, highly magnified (Miiller) 

 Hialomiua, Y 

 Sphserozoum 



Halobates wiillerstorffi, | (Challenger) 

 Hastigerina pelagica, ^^- (Challenger) 

 Noctiluca, magnified 

 Eucope diaphana, | ... 



Lizzia grata, magnified . 

 Mnemiopsis Leidyi, somewhat reduced 

 Zoea of Careinus, greatly magnified 

 Panopus embryo, greatly magnified 

 Zoea of Porcellana, & . . . 

 Pelagic refuse, magnified 

 Trichodesmium erythrseum, | . 

 Coccosphere, ^^ (Challenger) 

 Rhabdosphere, if ^ (Challenger) 

 Gulf-weed, ^ . 



Velella mutica, vascular canal filled with yellow 

 magnified ..... 

 Single yellow cell, magnified 

 Velella medusa, with yellow cells, magnified 

 Plironima sedentaria, in its Doliolum house, 



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 



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) 



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



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



216, 217 

 217 

 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 



