. Annals of the South African Museum. Annale van die Suid-Afrikaanse Museum. Natural history. 554 Annals of the Smith African Museum. d, g). As the figures show, there are often appreciable differences between the two semicells, and even between the two sides of a semi- cell, in both these respects. Other variations concern the upper lateral margins. They may lack the median crest and have a more or less concave edge (Fig. 28,/, g), which may sometimes, however, be almost straight (Fig. 28, g, the right-hand side of the lower semicell). In this respect also there may be diversity on the two si
. Annals of the South African Museum. Annale van die Suid-Afrikaanse Museum. Natural history. 554 Annals of the Smith African Museum. d, g). As the figures show, there are often appreciable differences between the two semicells, and even between the two sides of a semi- cell, in both these respects. Other variations concern the upper lateral margins. They may lack the median crest and have a more or less concave edge (Fig. 28,/, g), which may sometimes, however, be almost straight (Fig. 28, g, the right-hand side of the lower semicell). In this respect also there may be diversity on the two sides of the same semicell. Lastly, the apex varies considerably in breadth and in the degree of development of the refuse character, being sometimes practically truncate (Fig. 28, d-g). In those forms, in which the lower lateral margins become sub-. 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; South African Museum. Annale van die Suid-Afrikaanse Museum. Cape Town [etc. , South African Museum, etc. ]
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
