Fig. 3 in Morphological observations on three Baltic species of Corynosoma Lühe, 1905 (Acanthocephala, Polymorphidae)

Fig. 3. SEM micrographs of Corynosma magdaleni from grey seals, Halichoerus grypus, in the Swedish Baltic Sea. a. ♀, entire worm, ventro-lateral view, from the Bothnian Bay, Norrbotten, Luleå. Ventral spination extends over more than half the length of the hind-trunk. b. Proboscis of a ♀ showing the spineless neck and the arrangement of the hooks. c. Posterior end of a ♂ showing the extended copulatory bursa. d. Posterior end of a ♀ in which the gonopore has been retracted into the gential vestibule.