Biology of the vertebrates : a comparative study of man and his animal allies. Vertebrates; Vertebrates -- Anatomy; Anatomy, Comparative. Gill Sac â Outer Duct from Sac Common Opening of Branchial
European Honey Bee (Apis Mellifera) with Pollen Sacs Flying Towards a Scentless Mayweed Flower, UK' Photographic Print - Fergus Gill | Insekten, Bienen, Erste hilfe
Sinergasilus lieni females without eye sacs attach to the proliferated... | Download Scientific Diagram
Comparative anatomy of vertebrates. Anatomy, Comparative; Vertebrates. GILLS 355 Fishes.—In the true Fishes the gills come into close relation with the visceral arches, and in Elasmobranchs they consist of closely approximated
Comparative anatomy and physiology. Chap. VI.] GILLS OF FISHES, 233 the gill sacs open separately to the exterior, but in the hag the ducts unite and open by a common orifice