The cestodes of seals from the Antarctic

Abstract

Markowski reviews and redescribes the twelve species of Pseudophyllidean tapeworms which have been found in the Weddell seal, leopard seal, crabeater seal, elephant seal and Ross seal. He condudes that there are nine valid species (including one new species) belonging to four genera, two of which are new. In Baylisia baylisi n.g., n, sp. from Lobodon carcinophagus, normal segmentation is not distinct; the genital organs and openings are in double sets situated ventrally on both sides of the segment; the testes lie in a single layer; the ovary is ramified; the excretory system is in the cortical parenchyma and the longitudinal muscles form a thick coat. Baylisiella n.g. is created for Bothriocephalus tectus from Macrorhinus leoninus. The genus can be distinguished from Bothriocephalus and Diphyllobothrium by differences in the scolex, distribution of testes and development of the muscles. Diphyllobothrium perfoliatum Railliet & Henry, 1912 is transferred to Glandicephalus as G. perfoliatus n.comb. R.T.L.