Études sur la famille des Vespidae Paris, V. Masson, 1852-1858. Eumenes, Hornets, Pollen wasps, Vespidae, Wasps, Museum of Comparative Zoology, This collection showcases a series of detailed illustrations of various bee species, organized by their anatomical features. The top section presents side views of different bees, labeled with corresponding identification numbers. Each illustration highlights distinct characteristics such as body shape, wing structure, and coloration. The central area focuses on three bees depicted from multiple angles, providing insight into their morphology. The bottom portion features a close-up of the head of one species, emphasizing its intricate facial structure. These illustrations serve as a valuable resource for entomological study and classification, showcasing the diversity and complexity of these important pollinators.