. Bonner zoologische Monographien. Zoology. UTEVSKY, ANTARCTIC PISCICOLID LEECHES. FIG. 36. Pleurobdella australis, dorsal view. Posterior sucker: small, centrally attached, cup- shaped, facing directly posteriorly, ocelli absent. Digestive system. Esophageal diverticula absent. Crop chambers without lateral processes. Posterior crop caeca nontotally fused, with fenestrae. Intesti- nal chambers and rectal dilation weakly developed. Reproductive system. Six pairs of testisacs. Bursa long, accessory glands absent. Ovisacs short, con- ductive tissue and copulatory area absent. Coelomic system. Do
. Bonner zoologische Monographien. Zoology. UTEVSKY, ANTARCTIC PISCICOLID LEECHES. FIG. 36. Pleurobdella australis, dorsal view. Posterior sucker: small, centrally attached, cup- shaped, facing directly posteriorly, ocelli absent. Digestive system. Esophageal diverticula absent. Crop chambers without lateral processes. Posterior crop caeca nontotally fused, with fenestrae. Intesti- nal chambers and rectal dilation weakly developed. Reproductive system. Six pairs of testisacs. Bursa long, accessory glands absent. Ovisacs short, con- ductive tissue and copulatory area absent. Coelomic system. Dorsal lacuna absent. Main and accessory connections absent. Host data: Glyptonotus antarcticus (Ord. Isopoda), fam. Chaenichthyidae (Ord. Perciformes). Distribution (Fig. 37): Atlantic and Indian parts of the Antarctic region. Monotypic genus. References: Sawyer & White 1969, Sawyer 1976, Sawyer 1986, Janssen 1993. Glyptonotobdelta antarctica Sawyer & White, 1969 (Syn. Notobdella strep to cheles Yang, 1987) 1. External characters. Not large leeches. Up to 26 mm in length and mm or more in width. Body long, cylindrical, indistinctly divided into trachelo- some and urosome, with 10-12 pairs of lateral tu- bercles on urosome (Fig. 38: 1). Anterior sucker small, distinctly divided from trachelosome, eccentrically attached; edge rough, surface smooth with pair of eye- like spots on pigment area, mouth-pore centrally located (Fig. 38: 3). Posterior sucker small, not larger than anterior, distinctly divided from urosome, cen- trally attached, facing directly posteriorly, divided by furrows into 4-5 rings, without papillae (Fig. 38: 4). Annulation. Clitellum 7(l4)-annulate, male go- nopore between annuli 7 and 8, female gonopore be- tween annuli 12 and 13, external copulatory area absent (Fig. 38: 5). Complete somite 12-annulate (may be 12-18 annulate), annulus A3 wider than A] and A2, lateral tubercles on annulus A2 (Fig. 38: 6). Anus on annulus 3 from posterior sucker (Fig
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