— 84 — 



.MelosirA sulcata Eb . 

 niavicula crabro Eh. 



■— fusca Ralf. 



— gemmata v. spectabilis. 



— Kittoniana A. S. 



— Lapeyrereana Temp. et M. Per. 



— lyra Eh. c inter média J'<i 



ambigua. 



— lyra V. subelliptica. 



— nitescens f» major long. 110 f*. 



— prsetexta Eh. 



Podosira hormoides Mont. 

 Rhabdonema adriaticum Ktz. 

 8yne«ira superba Ktz. 

 Triceratium antediluvianum Eh, 



— latum V. plana M. Per. à 



côtés à peine concaves et à 

 ponctuations très fines. 



— parallelum Grev. 



— spinosum Bail. 



No 155 SAINT-EUGÈNE — ORAN (Algérie) 



Actinocyclus Barklyi Grun. 



— Ebrenbergii Ralfs. 



— Ralfsii W. Sm. 



— tenellus Bréb. 



Actinoptycbus undulata Eh. 



Amphora crassa Greg. 



— eœsecta Grun. 



— robusta Greg. 



Biddulpbia Taomeyi Bail. 

 Climacospbenia moniligera Eh. 

 Coeconeis vitrea J. Br. 



Coscinodiscus argus Eh. 



— curvatulas Grun. 



— lineatus Eh. 



— marginatus Eb. 



— oculus iridis Eh. 



— radiatus. 



— subtilis Eb. 



— symbolophorus Grun. 

 Dimeregramma marinum Greg. 

 Endictya oceanica Eh. 



Grammatopbora marina v, undulata. 



— parallela Eh. 



— robusta Dip. 



Hyalodiscus radiatus Bail. 



Melosira sulcata Eh. 



IV'avicala clavata Greg. 



— crabro Eh. 



— fusca Ralf. 



— gemmata Grec. 



I — — p. spectabilis. 



— Hennedyi W. Sm. 



— — V. cuneata. 



— — V. neapolitana. 



— lyra V. intermediaf^ ambigua. 



— — V. recta. 



— — p. subelliptica. 



— nitescens Greg. 



— prsetexta Eh. 



Rbabdonema adriaticum Ktz. 

 StictodiscDS californicus v. Nancooren 



sus. 

 Synedra superba Ktz. 

 Toxariuni undulatum Bail. 

 Tracbyneis aspera CI. var. 

 Triceratium antediluvianum Eb. 



— parallelum Grev. 



— spinosum Bail. 



Xantbîopyxis cingulata Eb. 



