. Annales de biologie lacustre. Natural history; Freshwater animals; Freshwater plants; Lakes. Fi?. 4. Larve von Baëtis gemellus Etn. Fig. 1. — Erwachsene Larve. y, 2. — Tracheenkiemenlamelle. » 3. — Labriiin. » 4. — 1. Maxille. » o. — Bein. » 6. _ Mandibel (linke).. 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, bookdecade1900, books, booksubjectnaturalhistory