. Bonner zoologische Monographien. Zoology. UTEVSKY, ANTARCTIC PISCICOLID LEECHES. FIG. 14. Pulsatile vesicles: A, pulsatile vesicles of the subfam. Piscicolinae; B, pulsatile vesicles of the gen. Pontobdella (subfam. Pontobdellinae); C, pulsatile vesicles of the gen. Moorebdellina (subfam. Pontobdellinae); Dl, dorsal lacuna; VI, ventral lacuna; LI, lateral lacuna; Sil, sublateral lacuna; Ml, marginal lacuna; Tl, testicular lacunae; Mc, main connection; Ac, accessory connection; Pv, pulsatile vesicles. Pulsatile vesicles may be absent (subfam. Platy- bdellinae) or present. It may be of differe
. Bonner zoologische Monographien. Zoology. UTEVSKY, ANTARCTIC PISCICOLID LEECHES. FIG. 14. Pulsatile vesicles: A, pulsatile vesicles of the subfam. Piscicolinae; B, pulsatile vesicles of the gen. Pontobdella (subfam. Pontobdellinae); C, pulsatile vesicles of the gen. Moorebdellina (subfam. Pontobdellinae); Dl, dorsal lacuna; VI, ventral lacuna; LI, lateral lacuna; Sil, sublateral lacuna; Ml, marginal lacuna; Tl, testicular lacunae; Mc, main connection; Ac, accessory connection; Pv, pulsatile vesicles. Pulsatile vesicles may be absent (subfam. Platy- bdellinae) or present. It may be of different origin: pulsatile vesicles located in places of connections of lateral lacunae with the main connection (one pair of external vesicles per somite in leeches of the subfam. Piscicolinae) (Fig. 14 A); two pair of subepidermal vesicles per somite located in places of connections of lateral lacunae with the main and accessor)' connec- tions in the leeches of the subfam. Pontobdellinae (gen. Pontobdella) (Fig. 14 B); pulsatile vesicles as dilation of marginal lacunae (one or two pair ol sub- epidermal vesicles per somite in leeches of the sub- fam. Pontobdellinae (gen. Moorebdellina) (Fig. 14 C). External pulsatile vesicles difter in size. 21. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bonn, Zoologisches Forschungsinstitut und Museum Alexander Koenig
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