Anisodonta alata (Powell, 1952) Width 10mm, Height 5.5mm Marine, Endemic North and South Islands ACFME. |
Anisodonta alata trigonia (Powell, 1952) Width 4.8mm, Height 3.5mm Marine, Endemic, Shorter and more trigonal than alata and has the umbonal-ventral ridge stronger and distinctly angulate Off Campbell Island AnE. |
Anisodonta pseudoscintilla Ponder, 1971 Width 7.3mm, Height 4.7mm Marine, Endemic South Island. Off Taiaroa Heads, Otago. Off Chatham Islands FME. |