. Bonn zoological bulletin. Zoology. 50 Wolfgang Bohme et al. Remarks: Recorded by Rodel & Bangoura (2006) also from Diecke Forest. Naja nigricollis Reinhardt, 1843 Material examined: ZFMK 56037: Seredou. W. Biitzler coll. 1991/92. Remarks: Rodel & Bangoura (2006) listed this species al- so from Mt. Bero. Pseudohaje nigra Gunther, 1858 Material examined: ZFMK 56134, N'Zerekore, ex coll. H. Olsen, received Oct. 1993. Remarks: Ineich (2003), based on David & Ineich (1999), claimed that the presence of this species in Guinea was still uncertain although it was likely to occur, due to
. Bonn zoological bulletin. Zoology. 50 Wolfgang Bohme et al. Remarks: Recorded by Rodel & Bangoura (2006) also from Diecke Forest. Naja nigricollis Reinhardt, 1843 Material examined: ZFMK 56037: Seredou. W. Biitzler coll. 1991/92. Remarks: Rodel & Bangoura (2006) listed this species al- so from Mt. Bero. Pseudohaje nigra Gunther, 1858 Material examined: ZFMK 56134, N'Zerekore, ex coll. H. Olsen, received Oct. 1993. Remarks: Ineich (2003), based on David & Ineich (1999), claimed that the presence of this species in Guinea was still uncertain although it was likely to occur, due to a MNFTN specimen from the Liberian part of Mt. Nimba (Ineich 2003). However, both Roman (1976: "On possede en collection un exemplaire de N'Zerekore, Guinee") and Bohme (2000: based on ZFMK 56134) had reported/3 ni- gra already from Guinea. Viperidae Atheris chlorechis (Pel, 1851) Material examined: ZFMK 56109-110, Ziama Forest south of Seredou: Malweta village, W. Bohme coll. 2-26 Oct. 1993; ZFMK 82174, Mt. Bero, Bangoura & O. Rodel coll. 5 Dec. 2003. Remarks: Known in Guinea from the Mt. Nimba area (Vil- liers 1950, Angel et al. 1954 b, Ineich 2003), but also al- ready reported from Seredou (Condamin 1959). A Mt. Nimba specimen is depicted in Fig. 21. Bitis arietans Merrem, 1820 Material examined: Photographic voucher by MOR from Pic de Fon, 1600 m. Remarks: Apart from the altitude, this photographic record (Fig. 22) is remarkable because it shows a dorsal pattern where the light chevron marks typical for this species van- ish already after the first half of the body, passing grad- Bonn zoological Bulletin 60 (1): 35-61 Fig. 21. Atheris chlorechis from Mt. Nimba (Photo: C. Brede). ually into subquadrangular light spots. The same pattern type is seen in the photographic voucher from Kissidougou mentioned above and seems to be commoner in West Africa than a chevron-mark pattern along the entire body as it is typical for eastern and southern African popula
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