TABLE OF CONTENTS. XI 



Page 

 (ii.) Ectubranchiata 29 



ii. ECHINOTHtTRIID.E 29 



iii. Echinid^e 30 



Echininae .30 



(/3) Ieeegelaeia .30 



(i.) Gnathostomata 30 



iv. Clypeasteidje 31 



(ii.) Nodostomata 31 



v. Spatangid^e 31 



Cassidulina 31 



Spatangina 31 



a. Prymnadetes 31 



b. Prvmuodesmia 31 



II. SPECIAL PART. 

 A. Description of the Genera and Species. 



I. HOLOTHUEIOIDEA. 



Synapta, Eschscholtz 32 



inhserens, 0. F. Midi 33 



buski, Mcintosh 34 



digitata, Montagu 34 



Cucumaria, Forbes 35 



hyndmani, Thompson 36 



planci, Gmel 37 



pentactes, Mont 37 



lactea, F. § G 38 



hispida, Barr 38 



frondosa, Gfunn 39 



fucicola, F.SfG 40 



andrewsii, Farran 41 



Thyone, Semper 41 



fusus, O. F. Mull 42 



raphanus, Dub. Sf Kor 42 



flexus, Hodge 43 



elegans, Norm 43 



