. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. 34 (1983) Heft 1-3 African snake faunas 331 VEGETATION zones: GUINEA SAVANNA- •SAHEL SAVANNA FOREST SUDAN SAVANNA 40. Fig. 6. Changes in the numbers of species of Guinea or Sudanosahel savanna snakes at different latitudes in Ghana and Upper Volta, centred about longitude 2°W. Com- pare with Fig. 5 from which data derived. Shaded latitudes indicate approximate extent of transition from one vegetation type to another. Causus resimus — non-penetrant in West Africa, Me
. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. 34 (1983) Heft 1-3 African snake faunas 331 VEGETATION zones: GUINEA SAVANNA- •SAHEL SAVANNA FOREST SUDAN SAVANNA 40. Fig. 6. Changes in the numbers of species of Guinea or Sudanosahel savanna snakes at different latitudes in Ghana and Upper Volta, centred about longitude 2°W. Com- pare with Fig. 5 from which data derived. Shaded latitudes indicate approximate extent of transition from one vegetation type to another. Causus resimus — non-penetrant in West Africa, Meizodon coronatus I Natriciteres olivácea \ West African penetrants. Philothamnus heterolepidotus I But the total snake fauna of the Kenyan coast amounts to 48 species (Appen- dix B and Table 4) and of these 17 (or 35 %) reach West Africa. The Kenyan inland fauna (of 61 species) includes 30 (or 49 %) West African species. Most of the species also found in West Africa occur there throughout Guinea savan- na but others get no further than eastern Nigeria or Niger and are considered non-penetrant whilst others are penetrant but restricted to the Sudanosahel: Causus rhombeatus Eryx colubrinus Naja pallida Telescopus dhara non-penetrant 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 Zoologisches Forschungsinstitut und Museum Alexander Koenig. Bonn : Das Forschungsinstitut
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