VI INDEX. 



71. Lagena or Ooliua — Charing. 



72. Section of Fig. 70 — Charing. 



73. 74. Apparently terminal cells of Dentaliua aculeata, 



D' Orbigny — Charing. 



75. Lateral view of Cytherina echinulata nobis.* — Charing. 



76. Dorsal aspect of the same — Charing. 



77. Cytherina concentrica nobis — a distinct species, exhi- 



biting numerous concentric lines on its lateral aspect 



— Charing. 



78. umbonata nobis — Charing. 



7y. ■ serrata nobis — may be young of Fig. 75 — 



Charing. 



80. ■ Isevis nobis — Charing. 



81. Portion of a sponge spiculum ? Charing. 



82. Calcareous sponge spiculum. Chalk from a hollow flint. 



83. SiUceous sponge spiculum. Ditto. 



84. Lamina of shell structure— Charing. 



85. 86. Detached prisms of the same — Charing. 



* Mr. Harris has kindly permitted me to append these provisional 

 specific names to the Entomostraca from Charing. 



It is proper to observe, that all the microscopic 

 observations detailed in the preceding pages, have been 

 made with the beautiful and accurate instruments manu- 

 factured by our fellow-townsman Mr. Dancer, of Cross 

 Street. 



