— 124 - 



4 Podocystis Americana Bail. 



5 Auliscus punctatus Bail. 



6 ? Macraenus Grev. 



7 ? pruinosus Bail. 



8 ? radiatus Bail. 



9 s punctatus Bail. var. 



10 s Grunowii A. Schm. 



11 * Caribaeus Cl. 



12 * sculptus (Sm.) Ralfs. 

 13—15 = caelatus Bail. 



16 Coscinodiscus bisinuatus A. Schm. 



17 Endyctia minor A. Schm. 



18 Coscinodiscus nitidulus Grün. 



19 = concavus Greg. 



20 = bisinuatus A. Schm. abnorm. 



21 * nitidus Greg. 



22 Cyclotella stylorum Bright. 



23 Hyalodiscus radiatus var. arctica Grün. 



12. 1 Actinoptychus splendens (Shad.) Ralfs. 



2 == Erinaceus Temp. et Brun. 



3 * splendens (Shad.) Ralfs. 



4 s triradiatus Roper. 



5 * Weissflogii A. Schm. 



6 * undulatus Ehr. 



7 s excellens Schum. 



8 * splendens (Shad.) Ralfs. 

 9 — 10 Aulacodiscus Johnsonii Arn. 



11 Melosira undulata Kg. 

 12—13 , sulcata Kg. 

 *14 Melosira 



15 Coscinodiscus excentricus Ehr. 



16 * denarius A. Schm. 



17 Hyalodiscus subtilis Bail. 



18 Coscinodiscus symmetricus Grev. 



19 Eupodiscus commutatus Grün. 



20 * Jonesianus Grev. 



21 Actinocyclus Barkleyi (Ehr.) Grün. 



13. 1 Coscinodiscus subtilis Ehr. 



2 * apiculatus Ehr. 



3 Eupodiscus Argus Ehr. 



4 Coscinodiscus Janischii A. Schm. 

 *5 Coscinodiscus 



