. Bulletin of the Natural History Museum Zoology. FRESHWATER NEMATODES FROM LOCH NESS A/1 ill1. Fig. 5 Coslenchus sp. 2. A-E, female. A, oesophageal region: B. lateral field; C, vulval region; D. tail; E. habitus. Scale bars a = 20 pm. b = 100 pm. rounded about um wide. Oesophagus 136 um long; median bulb ovoid, valve well developed at of oesophageal length. Vulva with lateral vulval membranes, um long or about 3 annules wide; vagina slightly inclined anteriorly with thickened walls; postuterine sac short; spermatheca empty. Distance from vulva to anus 91 um. Tail damaged, but an


. Bulletin of the Natural History Museum Zoology. FRESHWATER NEMATODES FROM LOCH NESS A/1 ill1. Fig. 5 Coslenchus sp. 2. A-E, female. A, oesophageal region: B. lateral field; C, vulval region; D. tail; E. habitus. Scale bars a = 20 pm. b = 100 pm. rounded about um wide. Oesophagus 136 um long; median bulb ovoid, valve well developed at of oesophageal length. Vulva with lateral vulval membranes, um long or about 3 annules wide; vagina slightly inclined anteriorly with thickened walls; postuterine sac short; spermatheca empty. Distance from vulva to anus 91 um. Tail damaged, but annules up to finely rounded terminus. Remarks. Although the tail of this specimen is damaged, it is clearly different from the other species of Coslenchus found in Loch Ness. Ratios effected by this damage are considered to be close to measurements that would have been obtained had the specimen been undamaged. It keys out close to C. pastor Andrassy, 1982, but the morphometries are a poor fit. Filenchus cf. discrepans (Andrassy, 1954) Raski & Geraert, 1987 (Fig. 6) Material examined. Fort Augustus Bay: 98, 102 m; cores 5, 6; 2 99. Deep South Basin: 196, 204 m; cores 8. 10; 2 99. Foyers Plateau: 158,-160m; cores 14, 15,18; 3 99. Deep North Basin: cores 20,22; 211 m. 2 99. River Foyers: m; cores 41, 42,44; 16, 3 99. Horizon. Core 14, (1-2 cm). Females, (n = 10). L = 429 um (337-526); a = 35 (); b = (); c = ();c'= (); V = 60 (57- 64); V = (); tail/V-a = (); tail = 109 urn (). Head pm wide at base. Annules um () wide at. 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 Natural History Museum (London). Andover : Intercept


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