FIGURE 1 in Equine Strongylidae and other parasitic nematodes described by Arthur Looss during 1895-1911 in the collections of the Swedish Museum of Natural History

FIGURE 1. Trichostrongylus colubriformis (Giles, 1892) Ransom 1911 (= Strongylus subtilis Looss, 1895): A—unpublished ink drawing of a male; B—pencilled sketches of a male (males?) some of which were used in preparation of Figs 4–5 in Looss (1905a); C—unpublished ink drawing of a female; B—pencilled sketches of a female (females?).