Tugali colvillensis Finlay, 1926 Length 26mm, Width 15mm, Height 9mm Marine, Endemic North and South Islands ACFE. |
Tugali elegans Gray, 1843 Length 55mm, Width 31mm Marine, Endemic Northern part of North Island and Chatham Islands ACFME. |
Tugali stewartiana Powell, 1939 Length 57mm, Width 18mm, Height 10mm Endemic, Less tapered anteriorly, and has much coarser sculpture - fewer, broader and flatter radials, fewer and stronger concentric ridges Stewart Island and Foveaux Strait FE. |
Tugali suteri (Thiele, 1917) Length 15mm, Width 11mm Marine, Endemic, Anal fasciole consists of two radial ribs, compared to three in T. elegans North Island, Cook Strait and Chatham Islands ACME. |
Tugali suteri sutherlandi Fleming, 1948 Length 15mm, Width 10mm Marine, Endemic, Radial ribs alternate in strength, and concentric riblets are much weaker, causing slight beading of the radials Fiordland, South Island FE. |