. Annales de biologie lacustre. Natural history; Freshwater animals; Freshwater plants; Lakes. — 249 — a, — Les trachéo-branchies métasternales: Elles sont placées soi) en avant seulement du métasternum, comme chez Megarcys signata (fig. 6, A, ma), soit aussi en arrière encore, comme chez Pteronarcys (fig. 6, B, ma) et Pte- ronarcclla (fig. 6, C, w«).. TUO . rr -. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Station biol
. Annales de biologie lacustre. Natural history; Freshwater animals; Freshwater plants; Lakes. — 249 — a, — Les trachéo-branchies métasternales: Elles sont placées soi) en avant seulement du métasternum, comme chez Megarcys signata (fig. 6, A, ma), soit aussi en arrière encore, comme chez Pteronarcys (fig. 6, B, ma) et Pte- ronarcclla (fig. 6, C, w«).. TUO . rr -. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Station biologique d'Overmeire. Bruxelles : F. Vanbuggenhoudt
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectnaturalhistory, booky
