FIGURE 2 in A new species of pencil smelt Nansenia boreacrassicauda (Microstomatidae, Argentiniformes) from the North Atlantic Ocean

FIGURE 2. Morphological characters of Nansenia boreacrassicauda sp. n. (A) opercular tube of the holotype. (B) opercular tube of the paratype (ZMH 122530). Note the less concave, differently angled and wider indentation in the opercular bone as compared to the holotype. (C) lateral line scales below adipose fin of the holotype and one paratype (ZMH 122532). (D) crumenal organ of the holotype. Black denotes cartilage.