. Elementary entomology . FIG. 2. Diagram to express the fundamental structure of an arthropod a, antenna ; a/, alimentary canal: b, brain : d, dorsal vessel; ex, exoskeleton ; /, limb : n, nerve chain : s. subesophageal ganglion. (After Schmeil, from Folsom) higher animals, such as the fishes, reptiles, birds, and mammals ; while in the latter are included all the lower forms of life, which are usually smaller in size and soft-bodied, as the molluscs, echino- derms, worms, insects, and their relatives. 5

---

Size: 4442px × 1125px
Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookpublisherbostonnewyorketcginnandcompany, booksubjectinsects