. Bulletin of the Natural History Museum Zoology. FRESHWATER NEMATODES FROM LOCH NESS DESCRIPTIONS OF SPECIES Aglenchus agricola (de Man, 1884) Andrassy, 1954 (Fig. 2) Material examined. Fort Augustus Bay: 92, 105 m; cores 2, 3; 29$. Foyers Plateau: 150-161 m; cores 14-17; 299 46*6*. River Foyers: m; cores 40, 43, 45: 2 99, 266. Horizon. Core 2 (2-3 cm), core 14 (3^4 cm), core 40 (2-3 cm). Females, (n = 5). L = 650 urn (625-667): a = 31 (); b = (); c = (); c' = (); V = (53- 56); V = (); tail/V-a = (): tail = 1
. Bulletin of the Natural History Museum Zoology. FRESHWATER NEMATODES FROM LOCH NESS DESCRIPTIONS OF SPECIES Aglenchus agricola (de Man, 1884) Andrassy, 1954 (Fig. 2) Material examined. Fort Augustus Bay: 92, 105 m; cores 2, 3; 29$. Foyers Plateau: 150-161 m; cores 14-17; 299 46*6*. River Foyers: m; cores 40, 43, 45: 2 99, 266. Horizon. Core 2 (2-3 cm), core 14 (3^4 cm), core 40 (2-3 cm). Females, (n = 5). L = 650 urn (625-667): a = 31 (); b = (); c = (); c' = (); V = (53- 56); V = (); tail/V-a = (): tail = 194 \im (188-200). Head continuous, not annulated. Body annules urn wide at mid-body. Lateral fields with three lines; outer lines sometimes appear double, whereas the inner line which is usually weakly expressed, could be interpreted as two lines very closely set as they appear as either gully or ridge-like (dependent on optical settings). Spear moderately robust, urn long, basal knobs distinct about urn wide. Oesophagus um long; median bulb ovoid with usually distinct valves at 44-50% of oesophageal length. Vulva with flaps about um long covering about three annules; vagina curved anteriorly with swollen pyriform walls; anterior. Fig. 2 Aglenchus agricola (de Man, 1884). A-E, female. A, oesophageal region; B, posterior end of reproductive system; C. tail; D, lateral field; E, habitus: F, male spicular region. Scale bars a = 20 |jm, b = 40 |jm, c = 100 um. genital branch 123-146 um long; spermatheca partly offset, usually poorly defined, ovoid to elongate-ovoid, sometimes appearing double, length variable um; postuterine sac lacking. Males, (n = 6). L = |jm (469-670); a = (33^3); b (n - 4) = (); c = (); c' = (); gubernaculum (n = 5) = um (); spicules (n = 5) = um (); tail = urn (153-219). Similar to female. Annules um wide at mid-body. Spear um
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