Fig. 3.

Nomarski interference contrast of the eggs of Eucoleus [Capillaria] sp. (cat) and Eucoleus aerophilus (syn. Capillaria aerophila). Surface of Eucoleus sp. (cat) egg demonstrating fine regular anastomosing reticulations (A) when focused on the surface; when focused on the asymmetrical polar plugs (B) the reticulation is not recognisable. Surface of E. aerophilus (syn. C. aerophila) egg demonstrating coarse anastomosing ridges (C) when focused on the surface; when focused on the asymmetrical polar plugs (D) the reticulation is not recognisable. Scale-bars: 20 μm