This illustration showcases a series of detailed scientific drawings depicting various species of ostracoda from Madeira. Each labeled specimen is presented with a focus on their distinct shapes and characteristics, illustrating the diversity within this class of crustaceans. The numbered entries range from oval to elongated forms, highlighting features such as the carapace and valve structures. The arrangement provides a clear reference for identification and study, emphasizing the intricacies of these small but significant marine organisms.