Free-living marine nematodes from Biscayne Bay, Florida. 4. Cyatholaimidae: on the occurrence of Marilynia n.gen. and Longicyatholaimus Micoletzky, 1924 in Biscayne Bay, with a description of L. longicaudatus (de Man, 1876) from the type locality. Zoologischer Anz, 189(1-2) 1972: 64-88. 73 [Zoological Record Volume 109]