Terrestrial nematodes from Jan Mayen Author Allgén, C. A. text Annals and Magazine of Natural History 1953 12 6 665 688 journal article 10.1080/00222935308654469 10811051 Cephalobus (Eucephalobus)filiformi s (de M a n). de Man, 1884, pp. 98-99, pl. xiv, fig. 59. Dimensions-- ♂ . Body - length = 0. 6 8 0 mm., max. width = 0. 0 2 1 m m., oesophagus= 0-164mm ., tail = 0. 050 mm ., α= 32.38, β = 4. 15, y = 13.6. r a Juv. Body-length = 0 - 705 mm ., max. width = 0.020 mm ., (esophagus--- 0.213 m m., t a i | = 0. 0 5 5 m m., α =3 5.2 5, β = 3. 3 1, γ=12.45.