G. Pérez-Ponce de Leon, V. León-Regagnon, and S. Monks, “<i>Theletrum lamothei </i>sp. nov. (Digenea),parasite of <i>Echidna nocturna</i> from. Cuajiniquil, Gu1i\nacaste,. and. other digenes of • marine nshes fromCóstaRica”, Rev. Biol. Trop., vol. 46, no. 2, pp. 345–354, Jun. 1998.