CONTENTS. 



Eckinothuridffl Wyv. Thom 



Some Anatomical Features, Plates 



60-63 



The Spines, Pedieellarise, Sphse- 



ridia, and Spicules, Plates 64-67 . 



The Systematic Position of the 



Echinothuridae 



The Genera and Species of Echino- 

 thuridae ... • 



Phormosoma Wyv. Thom. . . . 

 Phormosoma alternans de Meij. 

 Phormosoma verticillatum Mort. 

 Phormosoma rigidum A. Ag. . 

 Phormosoma adenicum Dod. 

 Phormosoma placenta Wyv. 



Thom 



Phormosoma Sigsbei A. Ag. 

 Phormosoma iudicum Dod. . . 

 ♦Phormosoma bursarium 

 Ag., Plates 62, fig. 2 



, Plates 62, fig. 

 fig. S 



A. 

 63, 



Echinosoma Pomel 



Echinosoma hoplacantha A. Ag. 



and CI 



Echinosoma luculentum A. Ag. 



and CI. • 



Echinosoma hispidum Mort., 



Plates 62, fig. 3; 63, fig. 4 ; 



67, figs. 4-11 



Echinosoma tenue Pomel, Plate 



67, figs. 12-21 



Echinosoma Koehleri A. Ag. 



and CI 



Echinosoma zealandise A. Ag. 



and CI 



Echinosoma panamense Mort., 



Plate 67, figs. 1-8 



Echinosoma uranus Pomel . . 



Page 



141 



141 



142 



146 



151 

 153 

 155 

 156 

 156 

 156 



157 

 157 

 157 



158 

 160 



161 



163 



164 



165 



167 



168 



168 

 169 



Paok 

 Echinosoma Pomel {continued). 



Echinosoma Petersii A. Ag. and 



CI 169 



Kamptosoma Mort 169 



Kamptosoma asterias Mort. . . 170 



Kamptosoma indistinctum A. Ag. 170 

 Asthenosoma Grube 171 



Asthenosoma varium Grube . . 172 



Asthenosoma urens Saras. . . 172 



Asthenosoma heteractis Bed- 

 ford 172 



Asthenosoma Ijimai Yosh., 

 Plates 62, fig. 1 ; 63, fig. 2. 173 

 Araeosoma Mort 174 



Araeosoma thetidis A. Ag. and 

 CI., Plates 66, figs. 6-17; 68- 

 70 176 



Araeosoma bicolor A. Ag. and 

 CI., Plates 64, figs. 1-8; 71 ; 72 179 



Araeosoma pellucidum A. Ag. 

 and CI 181 



Araeosoma eurypatum A. Ag. and 

 CI., Plates 66, figs. 1S-19; 73- 

 75 181 



Araeosoma leptaleum A. Ag. and 

 CI., Plates 76 and 77 ... . 183 



Araeosoma hystrix A. Ag. and 

 CI. ... '. 186 



Arasosoma pyrochloa A. Ag. and 

 CI., Plates 66, figs. 1-4 ; 78- 

 80 186 



Araeosoma Belli Mort., Plate 66, 

 fig. 5 188 



Araeosoma violaceum Mort. . . 190 



Araeosoma coriaceum Mort. . . 190 



Araaosonia tessellatum Mort. . 190 



Araeosoma fenestratum Mort., 

 Plate 66, fig. 20 190 



* Hawaiian species. 



