Ercolania boodleae (Baba, 1938) Length 15mm, Marine Originally north-western Pacific, from Russia to Hong Kong, and Japan. Recently spread, and now established in the Gulf of California and southern Australia. Now also recorded from northern NZ A
Ercolania felina (Hutton, 1882) Length 10mm (animal), Marine, Endemic. Shell absent North and South Islands. On green filamentous algae ChaetomorphaACFE.