Fig. 11 in Morphology of larval and postlarval stages of Priapulopsis bicaudatus (Danielssen, 1869) (Priapulida) from the north atlantic ocean

Fig. 11. Postlarval stages: scalids. A. Series of scalids in younger stages decrease in number from three scalids (rectangle 1) over two scalids (rectangle 2) to one scalid (rectangle 3). B. Magnification of one scalid series showing apical receptors. C. Telescopic scalids and larger series in older stages. D. Telescopic scalids, here from the adult V13492 are composed of a basal (bp) and an apical (ap) part. E. Receptors at the tip of the apical part. All images SEM, A, B from specimen 6-1 of V13493, C, E from specimen 9-1 of V13493.