. Annals of the South African Museum. Annale van die Suid-Afrikaanse Museum. 152 ANNALS OF THE SOUTH AFRICAN MUSEUM Bequaert (1927), Azevedo et ah (1961), and Braga (1952). In the present contri- bution the systematic arrangement of Connolly (1939) has been followed, though changes in nomenclature made by Haas (1969), Mandahl-Barth (1968, 1972) and Heard & Vail (1976) have been incorporated. Figure 1 shows the watercourses referred to in the text. These comprise both large, perennial rivers such as the Kunene and Okavango with volumes that may exceed 6 000 m3/s during high flood which can
. Annals of the South African Museum. Annale van die Suid-Afrikaanse Museum. 152 ANNALS OF THE SOUTH AFRICAN MUSEUM Bequaert (1927), Azevedo et ah (1961), and Braga (1952). In the present contri- bution the systematic arrangement of Connolly (1939) has been followed, though changes in nomenclature made by Haas (1969), Mandahl-Barth (1968, 1972) and Heard & Vail (1976) have been incorporated. Figure 1 shows the watercourses referred to in the text. These comprise both large, perennial rivers such as the Kunene and Okavango with volumes that may exceed 6 000 m3/s during high flood which can drop to less than 15 m3/s in dry years (Stengel 1963), as well as largely seasonal floodplain or deltaic environments such as the Okavango delta, Linyanti swamp, eastern Caprivi floodplain and the Etosha Pan. Where measurements of shell height (altitude) are given, maximum height is used (except where indicated) in preference to umbonal height because in many cases the umbones were eroded to such an extent that considerable inaccuracies would have been introduced. The following abbreviations are used: SAM South African Museum, Cape Town NM Natal Museum, Pietermaritzburg TM Transvaal Museum, Pretoria MMK McGregor Memorial Museum, Kimberley SMN State Museum, Windhoek Where no abbreviations are given, the material has been lodged in the collection of the South African Museum, Cape Fig. 1. Map of south-central Africa (between latitudes 9 and 21CS) showing the river systems referred to in the 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 South African Museum. Cape Town [etc. ] The Museu
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Keywords: ., bookauthorsouthafr, bookcentury1800, bookdecade1890, bookyear1898
