TABLE OF CONTENTS. 



Page 



Note vii 



Colobocentrotus Brandt 1 



Colobocentrotus Mertensii Br. . 1 



Colobocentrotus Stimpsoni A. Ag. . 1 



Podophora Agass 2 



Podophora atrata Agass 2 



Podophora pedifera Agass 2 



Colobocentrotus and Podophora . . 3 



Colobocentrotus Mertensii Br. ; Plates 

 2, figs. 8-lS; 3% figs. 9-11; 30, 32, 

 //z./ figs- 5-S ; 35, 36, 39, figs. -s^tt^/ 



' ^ -^ 45, figs. 6-10  7 



/ Colobocentrotus Stimpsoni A. Ag. ; 



Plates 2, figs. 4-7 ; 29, 32, figs. 1-4 ; 



-2 - M 33, 34, 37, 38, 39, figs. ^i-S-; 40-45, 



figs. 1-5 9 



Page 

 Podophora atrata Agass. ; Plates 2, 



figs. 1-3; 3% figs. 5-S; 16, figs. 



9-14; 17-28, 31, figs. 5-8 ... . 14 



Podophora pedifera Agass. ; Plates 1, 



3^ figs. 1-4; 4-16, figs. 1-8; 31, 



figs. 1-4 19 



The Lanterns and Auricles of Colobocen- 

 trotus and Podophora ; Plates 13-15, 

 26-28, 44 25 



The Spicules of the Pedicels ; Plates 

 16, 46 26 



The Pedicellariae ; Plates 3»-6 ; 17-19 ; 

 29, 30 27 



The Sphseridia, Plates 31, 32, and Cysta- 

 canths, Plates 1-3 30 



