138 " thetis " scientific results. 



Crustacea, 

 attached or fixed, active or free. 



Balanus trigonus, Darwin. Filumnus, sp. 



Thalamita prymna, M. Edwards. 



The Amphipoda are represented 

 by one hundred and fifty speci- 

 mens, belonging to about ten 

 species and five or six genera. 



The Isopoda number two hundred, 

 and twenty examples, repre- 

 senting twelve or more species, 

 belonging to nine genera, 

 among which are the follow- 

 ing : — SphcEToma, Cirolana^ 

 Ajjsertdes, Gnathia, Arcturus, 

 Serolis. 



Vermes. 



Six species of Tubicolous worms, 

 belonging to about four genera. 



P0L\Z0A. 



Retepora, sp. 



Tuhucellaria hirsuta, Lamouroux. 

 Craspedozoum roboratum, Hincks. 

 C atenicella, sp. 



„ sp. 



Caherea, sp. 

 Cellejjora, sp. 



„ sp. 

 Amjyhiblestrum cervicorne, Busk. 

 Schizoporella, sp. 

 Idmonea, sp. 

 Tuhulipora, sp. 

 Licheiioj)ora, sp. 



MOLLUSCA. 



Spondyhis tenelhts, Reeve. Chiton, sp. 



Vermetes, sp. 



TUNICATA. 



Compound Ascidian. 



