Manuel d'actinologie ou de zoophytologie, Paris, F.G. Levrault, 1834-1836, corals, sea anemones, cnidaria, ctenophora, The illustration presents two detailed depictions of a species from the class Echinoidea, commonly known as sea urchins. The upper section showcases a rounded, somewhat oval shape featuring a central hole surrounded by a textured surface, likely representing the aboral view. The lower section is characterized by a star-like pattern with five distinct ridges radiating from a central point, illustrating the oral side. Each specimen is labeled for clarity, emphasizing the intricate natural designs and textures of these marine organisms. The overall presentation reflects a scientific approach to documenting and studying marine life, highlighting both aesthetic and anatomical features.