. Bonner zoologische Monographien. Zoology. BONNER ZOOLOGISCHE MONOGRAPHIEN Nr. 54/2007. FIG. 28. Epsteinia alba, dorsal and ventral view (Photo. Epshtein ). cated (Figs. 28, 29: 2). Posterior sucker small, but larger than anterior one, excentricaly attached, sur- face smooth (Figs. 28, 29: 3). Annulation. Clitellum 8-annulate (Fig. 29: 4). Male gonopore located in depression between annuli 3 and 4, female gonopore in depression between annuli 6 and 7. 3rd annulus enlarged in central part, 4th bent posteriorly and covering annuli 5 and 6, annulus 7 bent posteriorly also. Copulatory area in
. Bonner zoologische Monographien. Zoology. BONNER ZOOLOGISCHE MONOGRAPHIEN Nr. 54/2007. FIG. 28. Epsteinia alba, dorsal and ventral view (Photo. Epshtein ). cated (Figs. 28, 29: 2). Posterior sucker small, but larger than anterior one, excentricaly attached, sur- face smooth (Figs. 28, 29: 3). Annulation. Clitellum 8-annulate (Fig. 29: 4). Male gonopore located in depression between annuli 3 and 4, female gonopore in depression between annuli 6 and 7. 3rd annulus enlarged in central part, 4th bent posteriorly and covering annuli 5 and 6, annulus 7 bent posteriorly also. Copulatory area in depression around female gonopore. Complete somite 3-annu- late with additional annulation of 2nd degree. Di- mensions of annuli variable, without tubercles or papillae, wrinkled. Coloration. Body light colored but dorsum more dark than venter. No numerous large brown pigment cells visible in skin. 2. Digestive system (Fig. 29: 5). Base of proboscis located between ganglia 3 and 4 of ventral nerve cord. Large esophageal diverticula between ganglia 4 and 5. Five diamond-shaped crop chambers with small lateral processes. Posterior crop caeca absent. Five well developed intestinal chambers with voluminous lateral processes. Rectal dilation weakly developed. 3. Reproductive system (Fig. 29: 6, 7). Five pairs of testisacs. Seminal reservoirs well developed in form of some loops between ganglia 6 and 7 of ventral nerve cord. Initial parts of ejaculatory ducts slightly coiled, sharply divided from more wide terminal parts. Accessory glands absent. Common part small, bursa short. Ovisacs voluminous extending behind ganglion 8. Conductive tissue absent. 4. Coelomic system. Structure unknown. 5. Host data: on caudal fin of Trematomus borch- grevinki. 6. Distribution (Fig. 27): Enderby Land - Atlantic sector of the Antarctic region. References: Epshtein 1970b, Utevsky 1994. Genus Austrobdella Badham, 1916 Type species: Austrobdella translucens Badham, 1916. Not large or small leeches. Bo
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