— 114 — 



*9 Actinoptychus 

 *10 Melosira 



11 = Biharensis Pant. 



12 Stephanopyxis Russica Pant. 

 *13 Coscinodiscus 



14 Stephanopyxis Russica Pant. 



Tafel 17. Guano, Südamerika. 



1. 1 Aulacodiscus Brightwellii Jan. 



2 * convexus Gr. et St. 



3 * Comberi Kitt. 

 *4 Aulacodiscus 



5 = formosus Arn. 



6—8 * Comberi Kitt. 



9—10 * Crux Ehr. 



11 Eupodiscus Argus Ehr. 

 | 



2. 1 Cocconeis superba Jan. 

 2 Auliscus caelatus Bau. 



3 — 4 * ovalis Arn. 



5 s caelatus Bau. 

 6 — 7 s Grevillei Jan. 

 8 — 9 * Peruvianus (Kitt.) Grev. 



10 Biddulphia aurita Breb. 



*11— 12 Biddulphia 



13 * aurita Breb. 



14 — 15 = Toumeyi Bau. 



16 — 18 * Peruviana Grün. 



19 Euodia gibba Bail. 



20 — 21 Asteromphalus Ralfsianus Grün. 



22 ^ elegans Grev. 



23 * flabellatus Grev. 



24 = Arachne (Breb.) Ralfs. 



25 Stephanopyxis Tunis (Grev.) Grün. 



3. 1 Triceratium Patagonicum A. Schm. 



2 = affine Grün. 



3 = Favus Ehr. 



4 — 6 * fimbriatum Wall. 



7 * spinosum Bail. 



8 = formosum Bright. 



