- 1. Sycon, a small marine sponge of the sycon type, l.s. and t.s. on one slide Lieder_74624e
- 2. Sycon, a small marine sponge of the sycon type, t.s. through the body Lieder_Po111d
- 3. Sycon, near med. long. sec. through body and osculum Lieder_Po112f
- 4. Sycon, spicules isolated, w.m. Lieder_Po115b
- 5. Sycon, sec. showing stages of development * Lieder_Po116f