Plate P3. 1, 2. Asteromphalus symmetricus Schrader and Fenner (Samples 191-1179C-18H-3, 75–77 cm [1], and 191-1179C-9H-5, 75–77 cm [2]). 3. Asteromphalus hookeri Ehrenberg (Sample 191-1179C-12H-4, 75–77 cm). 4, 5. Asteromphalus parvulus Karsten (Samples 191-1179C-12H-5, 75–77 cm [4], and 191-1179B-3H-6, 75–77 cm [5]). Scale bars = 10 Ám.