In Tasmania, this genus includes 9 species, as follows:
Melanella cunaeformis (nest-shaped urchin-snail)
Melanella inflata (swollen seastar-snail) (figures a-b)
Melanella legrandi (Legrand’s urchin-snail)
Melanella mamilla (nipple urchin-snail)
Melanella mayi (May’s urchin-snail)
Melanella orthopleura (orthopleura urchin-snail)
Melanella schoutanica (Schouten Island urchin-snail)
Melanella tenisoni (Tenison’s urchin-snail)
Melanella tryoni (Tryon’s urchin-snail)