des mikroskopischen Lebens in Süd- und Nord- Amerika. i37 



'\p.> 



Pinnularia peregrina 



6 1 



7 — viridis 

 S Navicula amphioxys 



Qa — Lyra, Fragment 

 Ob Surirella? australis 



10 Cocconei's Placentula 



11 — r a. b. c. Scutellum 

 1 2 Amphora navicularis ? 



13 Gomphonema clavatum 



li — minulissimum 



15 Cocconema Lunula 



16 Achnanthes pachypus 



17 Gallionella sulcata 

 1S Arthrodesmus Taenia 

 19 Fragilaria rhabdosoma 



1 Slauroptera cardinalis 



2 Pinnularia chilensis 



3 Stauropteragibba 



4 Pinnularia Esox 



5 Stauroplera Legumen 



6 Pinnularia borealis 



7 — Cyprinus 



8 — gibba 



9 Stauroneis amphileptaCL 



10 — phyllodes 



11 — linearis 

 1 2a — dilutata 

 12b — constricta 



1 3 — amphilepla fj 



1 4 — graci/is 



15 Navicula amphioxys 



16 — limbala 

 1 7a — Semen ? 

 176 Tabellaria laevis 



IS Surirella Cralicu/a f3 chilensis 



1 Stauroplera aspera von vorn 



2 — — von der Seite 



3 Pinnularia viridis 

 ha Navicula lineolata 



III. Peru, pag.300. 



44 Navicula paradoxa 

 4c Surirella peruviana 



5 Eunotia ocellata 



6 — amphioxys 



