| thynnascaris reliquens sp. n. and t. habena (linton, 1900) (nematoda: ascaridoidea) from fishes in the northern gulf of mexico and eastern u.s. seaboard. | thynnascaris reliquens sp. n. is described from the type host, the sheepshead, archosargus probatocephalus (walbaum), and other fishes of the northern gulf of mexico and southern florida, including the gulf toadfish, opsanus beta (goode and bean); the spiny boxfish, chilomycterus schoepfi (walbaum); the slippery dick, halichoeres bivittatus (bloch); and the atlantic croaker, micropogon undulatus (linnaeus). its salient characters are: length up to approximately to 12.5 cm; lips broad, with pedun ... | 1975 | 1127562 |