Diatoms – 104 type slide Darkfield

1 – Lyrella hennedy
2 – Aulacodiscus Kitonii
3 – Arachnodiscus ornatus
4 – Biddulphia rhombus
5 – Tropidoneis lepidoptera
6 – Navicula oblonga

7 – Amphitetras antediluviana
8 – Didymosphenia geminata
9 – Cerataulus laevis