N» 790^ ARCACHON - GIRONDE (France) 



Pélagique 



■acteriaatrnm byalinum Laad. 



— varians Laud. 

 Biddalphia Baileyi W. Sm. 



— granulata Rop. 



— mobiliensia Bail. 

 Chaetoceroa armatum Weil. 



— curvisetum Cl. 



— danicum Cl. 

 — ^ didymum Eh. 



— Groelandicum Cl. 



— — T. leptopus. 



Chaetoceroa Lorenzianum Grun, 



— socialis Laud. 



Corethron hystrix Hensen. 

 Coacinodiacua eoncinnus W. Sm. 



— excentricus Eh. 

 Ditylinm Brightwellii West. 

 Plearoaigma balticum W. Sm. 



— quadratum W. Sm. 

 Stephanopyxia turgida Ralfs. 

 Surirella gemma Eh. 



N° 791 ARCACHON — GIRONDE (France) 



Pélagique 



Baetariaatram rarians Laud. 

 Bellerochea malleus V. H. 

 Biddulphia Baileyi W. Sm. 

 Ghœtoceroa cochlea Schûtt. 

 Cocçoneia scutellum Eh. 

 Eucampla zodiacus Eh. 



Guinardia flaccida M. Per. 



Rhizoaolenia alata Bright. 



— — V. corpulenta. 



— — V. (^racillima. 



— setigera Bright. 



Striatella unipunctata Ag. 



N*» 792 ARCACHON — GIRONDE (France) 



Pélagique 



ChsBtoc«r«a cocblaa Sehutt. 



— curvisetum Cl. 



— decipiens Cl. 



— didymnm Eh. 



Rhizoaolenia alata Bright. 



— — V. corpulenta. 



— — V. gracillima. 

 Sarirella gemma Eh. 



