Pyxilla baltica («ndocyst du Bhizosolenia 



setigera). 

 Rapboneis amphiceros c. rhombica Grun. 

 Rbizosolenia alata Bright. 



— — V. gracillima Grun. 



— 11 — 



Rhizosolenia alata v. setigera Bright. 

 Skeletonenia co8tatam Eb. 

 Tbalassiosira Nordenskioldii Cl. 

 Tbalassiothrix nitzschioides Grun. 



No« 143,144 EMBOUCHURE DE LA SEINE — LE HAVRE 



(Sur la vase) 



IVitzschia acuminata W. Sm. 



— sigma W. Sm. 

 Plagiotropis yitrea Grun. 

 Pleurosigma sestuarii W. Sm. 



— angulatum W. Sm. 



(n* 143). 



— balticum W. Sm. , 



— Brebissonii Donk. 



— hipf ocampus W. Sm. 



Pleurosigma littorale W. Sm. 



— quadratum W. Sm (N» 144). 



— sulcatum Grun (N* 144). 



— strigosum W. Sm. 



— Wansbeckii Donk. 

 Scoliopleura latestriata Grun. 



— tumida Grun. 



Surirella gemma Eb. 



No« 145à 147 ATLANTIC' CITY — NEW-JERSEY 



(Etats-Unis) 



BIBLIOGRAPHIE. — Henry Kain et E. A. Schultze. On a fossil 

 marine Diatomaceous deposit from Atlantic City. 



Actinocyclas Ehrenbergii var. Ralfs. 



— interpunctatus Ralfs. . 



— Ralfsii W. Sm. 

 Actinodiscus atlanticus K. et Sch. 

 Actinoptycbus areolatus Ehr. 



— cathedralis J. Br. 



— / heliopelta p. cersicolor 



J. Br. 



— Kraussii A. S. 



— mosaïca J. Br. 



Actinoptycbus notabilis J. Br. 



— ranunculus J. Br. 



— segmentatus J . Br. 



— splendens Grun. 



— — V. halionyx Grun. 



— undulatus Eh. 



— vulgaris Schum. 



— — v.virginicaGrun. 



Ampbitetras minuta Grev. 

 Anaulns birostratus Grun, 



