. Bonner zoologische Monographien. Zoology. BONNER ZOOLOGISCHE MONOGRAPHIEN Nr. 54/2007. FIG. 44. Cryobdella Ijadovi, ventral view. totally fused with 5 fenestrae, without lateral proces- ses, extending to posterior ganglion mass. Intestinal chambers weakly developed, without lateral processes. Rectal dilation weakly developed. 3. Reproductive system (Fig. 45: 7, 8). Five pairs of testisacs. Seminal reservoirs short and wide, ex- tending posterior to ganglion 6 of ventral nerve cord. Initial parts of ejaculatory ducts short and wide, sharply divided from roundish-wide terminal parts. Accessory
. Bonner zoologische Monographien. Zoology. BONNER ZOOLOGISCHE MONOGRAPHIEN Nr. 54/2007. FIG. 44. Cryobdella Ijadovi, ventral view. totally fused with 5 fenestrae, without lateral proces- ses, extending to posterior ganglion mass. Intestinal chambers weakly developed, without lateral processes. Rectal dilation weakly developed. 3. Reproductive system (Fig. 45: 7, 8). Five pairs of testisacs. Seminal reservoirs short and wide, ex- tending posterior to ganglion 6 of ventral nerve cord. Initial parts of ejaculatory ducts short and wide, sharply divided from roundish-wide terminal parts. Accessory glands absent. Common part small, bursa very small. Ovisacs long and voluminous, asymme- trical, extending posterior to ganglion 7. Conductive tissue absent. 4. Coelomic system (Fig. 45: 9). Dorsal, ventral, lateral, and testicular lacunae present. Main connec- tion nontotally close, ventral lacuna enlarges at gang- lion region, dorsal lacuna forms two long projections extended to dilation of ventral lacuna. Accessory connection absent. Testicular lacunae connected by lateral lacunae on each side. 5. Host data: all specimens collected from gills of Notothenia squamifrons. 6. Distribution (Fig. 39): Crozet L- Indian sector of the Antarctic region. References: Utevsky 1997. "Subfamily Piscicolinae" Diagnosis. Leeches of varying sizes; body long or short, cylindrical, subcylindrical or flattened. Tuber- cles, papillae, eyes, eye-like spots, segmental ocelli, ocelli on posterior sucker present or absent. Digestive system of varying structure, posterior crop caeca of varying degrees of fusion or absent. Reproductive system of varying structure. Coelomic system possesses dorsal, ventral, lateral, testicular lacunae, main and accessory connections of varying degrees developed, one pair of externally visible subepidermal pulsatile vesicles formed by mo- dified lateral lacunae per urosomal somite. References: Sawyer 1986; Epshtein et al. 1994. Genus Trachelobdellina Moore, 19
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