GENERAL INDEX. 



837 



Vault, 29, 105, 121, 148. 



is a modified disli, 124, 149. 



Ventral disk, 33, 35, 95, 118, 121, 150, 154. 



(PI. Ill, figs. 1-25 ; IV, figs. 1-5.) 

 Ventral sac (tube), 35, 114, 123, 157, 161. 



(PL VII, figs. 1-12.) 



Water pores, 123. 

 Xenoorimis, 67, 173, 175, 183. 



Baeri, 183. (PL IX, figs. 5a-d.) 



penieillus, 183. (PL IX, figs. 6a, b.) 



Zeaerinus, 52. 

 Zophocrinus, 146. 



