Campagne de i8gg. 



Tetractinellida 



i Thenea muricata (Bowerbank) Gray. 



2 Pœcillastra compressa (Bowerbank) 



Sollas. 



3 Tethya cranium (Mùller) Lamarck. 



4 Craniellopsis zetlandica (Carter). 



MONAXONIDA 



5 Hymeraphia stellifera Bowerbank. 



6 Polymastia uberrima (O. Schmidt) 



Thiele. 



7 Trichostemma hemisphairicum G. 



O. Sars. 



8 Sphaerotylus schœnus (Sollas) Top- 



sent. 



Axinella arctica (Vosmaer). 



Phakellia ventilabrum (Linné) Bo- 

 werbank. 



Phakellia rugosa (Bowerbank). 



Bubaris vermiculata (Bowerbank) 



9 

 io 



1 1 



12 



Gray. 



i3 Halichondria panicea (Pallas) Fle- 

 ming. 



14 Eurypon clavatum (Bowerbank) 

 Gray. 



1 5 Plocamia ambigua (Bowerbank) Top- 

 sent. 



Anchinoe Arneseni n. sp. 

 — Dendyi Topsent. 



Raspailia virgultosa (Bowerbank) 

 O. Schmidt. 



Echinoclathria foliata (Bowerbank). 

 20 Lissodendoryx fragilis ( Fristedt ) 

 Lundbeck. 



Lissodendoryx diversichela Lund- 

 beck. 



Tedania suctoria O. Schmidt. 



Melonanchora elliptica Carter. 



Histoderma physa (O. Schmidt) 

 Arnesen. 



25 Grayella pyrula (Carter) Lundbeck. 



26 Artemisina arcigera (O. Schmidt) 



Lundbeck. 



27 Hamacantha Johnsoni (Bowerbankï 



Gray. 



28 Mycale lingua (Carter) Lundbeck. 



29 Stylaxia Sluiteri (Vosmaer). 



30 Stylinos Fristedti n. sp. 



3i Reniera tenera (Marenzeller). 

 32 — tubulosa Fristedt. 



16 



l 7 

 18 



l 9 



21 

 22 



23 



24 



Campagne de igo6. 



1 Halichondria coalita Bowerbank. 



2 Ophlitaspongia basifixa n. sp. 



3 Hymedesmia perforata Lundbeck. 



Campagne de igo-j. 



1 Ficulina ficus (Linné) Gray. 



