Tristichotrochus gendalli (B.A. Marshall, 1979) Height 17mm, Width 15mm Marine, Native - Endemic Kermadecs, 366-402 metres K |
Tristichotrochus tosaensis Kuroda & Habe, 1961 Height 23mm, Width 21mm Marine Southern Japan, Philippine Islands, Chesterfield Islands, Loyalty Ridge, Kermadec Islands. 100-501 metres K |