. Bulletin of the Natural History Museum Zoology. Fig. 3 Coslenchus polonicus Brzeski, 1982. A-F, female. A, oesophageal region; B, lateral field; C, posterior end of reproductive system; D, habitus; E, tail tip; F, tail. Scale bars a = 20 um, b = 100 um. elongate, 38, 41 jam long, packed with sperms about um in diameter. Distance from vulva to anus 107-128 um. Tail tip finely rounded with annules in one specimen; rounded without discernible annules in other. Distribution and habitat. 'Collected in several places in Po- land and in Andreevskoe, Karelia, USSR, always in low peat soil, in sm
. Bulletin of the Natural History Museum Zoology. Fig. 3 Coslenchus polonicus Brzeski, 1982. A-F, female. A, oesophageal region; B, lateral field; C, posterior end of reproductive system; D, habitus; E, tail tip; F, tail. Scale bars a = 20 um, b = 100 um. elongate, 38, 41 jam long, packed with sperms about um in diameter. Distance from vulva to anus 107-128 um. Tail tip finely rounded with annules in one specimen; rounded without discernible annules in other. Distribution and habitat. 'Collected in several places in Po- land and in Andreevskoe, Karelia, USSR, always in low peat soil, in small number of specimens' (Brzeski, 1987). Remarks. These nematodes were not originally identified as C. polonicus because they have fewer cuticular ridges (18-20 vs 26 in C. polonicus). However, Brzeski (pers. comm.) recognized these females, and suggested they appeared to be C. polonicus. As there are no other significant differences between these females and descriptions of C. polonicus (Brzeski, 1982, 1987) it is assumed that the lower number of cuticular ridges lies within the range of varia- tion that might be expected in this species. Coslenchus sp. 1 (Fig. 4) Material EXAMINED. Fort Augustus Bay: 92 m; core 4; 1 9. Foyers Plateau: 157 m; core 16; 1 9. FEMALES, (n = 2). L = 520, 527 um; a = , ; b = , ; c - , ; c' = , ; V = 64, 65; V = 77, 79; Rex = 37,42; Roes = 42, 46; Rv = 136, 138; Rvan = 40, 37; Ran = 59, 53; tail/V-a = , ; tail = , um. Head offset in one specimen; , um wide with 4 annules. Annules about , urn at mid-body. Lateral fields with four lines. Cuticle with 14 longitudinal ridges (excluding lateral fields). Spear moderately robust , um long, knobs rounded, slightly. Fig. 4 Coslenchus sp. 1. A-E. female. A. oesophageal region; B. lateral field; C, vulval region; D. habitus: E, tail. Scale bars a = 20 um, b = 100 um. sloping posteriorly, , pm wide. Oesophagus , um long; median bul
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