. Bonn zoological bulletin. Zoology. 256 Mark Auliya et Fig. 1. Map of Guinea-Bissau; Capital Bissau (black square); major Bijagos islands are named. the next characteristic vegetation belt when moving to- wards inland. These are bordered by "depressions" of moist grass savatma (Hyparrhenia, Andropogon). Also Raphia exica (Arecaceae) is a characteristic element of these "valleys" (Limoges & Robillard 1991a). Evergreen bush-forests (up to 8 m tall) follow the partly swampy grass savannas inland , Mussaenda spp. (Rubiaceae) or Trema guineemis (Ulmaceae) (Knapp 19
. Bonn zoological bulletin. Zoology. 256 Mark Auliya et Fig. 1. Map of Guinea-Bissau; Capital Bissau (black square); major Bijagos islands are named. the next characteristic vegetation belt when moving to- wards inland. These are bordered by "depressions" of moist grass savatma (Hyparrhenia, Andropogon). Also Raphia exica (Arecaceae) is a characteristic element of these "valleys" (Limoges & Robillard 1991a). Evergreen bush-forests (up to 8 m tall) follow the partly swampy grass savannas inland , Mussaenda spp. (Rubiaceae) or Trema guineemis (Ulmaceae) (Knapp 1973). Rich rain- fall indicates patches of primary forest, representing the natural vegetation cover. According to Limoges & Robil- lard (1991a) these consist of half-moist and half-dry three- storied primary forests. In half-moist forests the upper sto- ry (canopy height around 30 m) is characterized by Chlorophora regia (Moraceae), andAfzelia africana (Cae- salpiniaceae). Elaies guineensis is the dominant species in the story below, whereas the undergrowth comprises shrubs and palm-shoots. Apart from these moist forests, which are distributed in the southern archipelago, the northern islands also support half-dry primary forests char- acterized by Khaya senegalensis (Meliaceae) and Parinari excelsa (Chrysobalanaceae). There are close phylogenet- ic relationships to the coastal regions of Guinea, Sierra Leone and Liberia (belonging to the western Guinean low- land forests), thus Guinea-Bissau's flora is assigned to the West African tropical Flora (lUCN 1986). Therefore, the flora of Guinea-Bissau consists of typical Sudano-ele- ments Acacia Senegal, Dicherostachys cinerea (Mi- mosaceae) together with elements of the tropical lowland evergreen rain forests of West Africa , Trichilia prieureana (Meliaceae). J. V. Barboza du Bocage published first data of Guinea-Bissau's herpetofauna in 1867. The majority of specimens originated from Bolaina Isl. and Bissau (Bocage 1
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