Part 7

124. SYNAPTA TENUIS 95

125. Anchor of Synapta 96

126. CAUDINA ARENATA 97

127. CUVIERIA SQUAMATA 98

128. Young Cuvieria 99

129. Cuvieria somewhat older than Fig. 128 99

130. PENTACTA FRONDOSA 100

131. TOXOPNEUSTES DROBACHIENSIS 102

132. Portion of shell of Fig. 131 without spines (Agassiz) 103

133. Sea-urchin shell without spines (Agassiz) 103

134. Sea-urchin from the mouth side (Agassiz) 104

135. Magnified spine 104

136. Transverse section of spine 105

137. Pedicellaria of Sea-urchin 105

138. Teeth of Sea-urchin 106

139. ECHINARACHNIUS PARMA 107

140. Transverse section of Echinarachnius (Agassiz) 108

141. Ray of Star-fish, seen from mouth side (Agassiz) 109

142. ASTRACANTHION BERYLINUS 110

143. Single spine of Star-fish 111

144. Limestone network of back of Star-fish 111

145. Madreporic body of Star-fish 111

146. CRIBRELLA OCULATA 112

147. CTENODISCUS CRISPATUS 114

148. OPHIOPHOLIS BELLIS 115

149. Arm of Fig. 148, from the mouth side (Agassiz) 116

150. Tentacle of Ophiopolis 116

151. ASTROPHYTON AGASSIZII 118