Plate P5. 1. Actinoptychus senarius (Ehrenberg) Ehrenberg (Sample 185-1149A-2H-5, 47-49 cm). 2. Actinoptychus splendens (Shädbolt) Ralfs (Sample 185-1149A-2H-4, 43-45 cm). 3. Arachnoidiscus schmidtii n. sp. Hajos (Sample 185-1149A-7H-6, 89-91 cm). 4. Asteromphalus arachne (Brébisson) Ralfs (Sample 185-1149A-10H-5, 111-113 cm). 5. Asteromphalus hepatis (Brébisson) Ralfs (Sample 185-1149A-10H-1, 135-141 cm). 6. Azpeitia neocrenulata Pergallo (Sample 185-1149-10H-4, 135-141 cm). Scale bars = 10 µm.