Newcombia

o the islands of Maui and Molokai, Hawaii. Six of the known species were endemic to Molokai (Newcombia canaliculata, Newcombia lirata, Newcombia perkinsi, Newcombia pfeifferi, Newcombia philippiana, and Newcombia sulcata), and only one species, Newcombia cumingi, is known from the island of Maui. Henry Augustus Pilsbry and Charles Montague Cooke, Jr. (1912-1914) is the most recent and accepted taxonomy for this genus.