Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . lt;| as S o C/3 128 ANNALS OF THE SOUTH AFRICAN MUSEUM Dimensions D Wb Wh Wb: Wh U Int. Ext H179/19 Z866Z1754Z351Z1755 255,0257,0213,0230,0 31,6 66,0(29,3) 59,0(22,9) 51,0(23,9) 56,5(24,6) 43,0 86,0(33,7) 89,0(34,6) 66,0(30,9) 79,0(34,3) 0,730,770,660,770,72 116,0(45,5) 117,0(45,5) 106,0(49,8) 99,0(43,0) 322732 323332 Description Coiling is evolute, with an umbilical width varying between 43 and 49 percent of the diameter, but usually of the order of 45 per cent. Whorl overlap isminimal, and the dorsal zone of impress
Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . lt;| as S o C/3 128 ANNALS OF THE SOUTH AFRICAN MUSEUM Dimensions D Wb Wh Wb: Wh U Int. Ext H179/19 Z866Z1754Z351Z1755 255,0257,0213,0230,0 31,6 66,0(29,3) 59,0(22,9) 51,0(23,9) 56,5(24,6) 43,0 86,0(33,7) 89,0(34,6) 66,0(30,9) 79,0(34,3) 0,730,770,660,770,72 116,0(45,5) 117,0(45,5) 106,0(49,8) 99,0(43,0) 322732 323332 Description Coiling is evolute, with an umbilical width varying between 43 and 49 percent of the diameter, but usually of the order of 45 per cent. Whorl overlap isminimal, and the dorsal zone of impression consequently small. The whorl section in all the available specimens is higher than wide through-out, but differs in details from one specimen to another, and also throughoutontogeny (Fig. 95B, 96A). The umbilical wall is virtually vertical on the innerwhorls, but becomes rounded on the outer whorls, merging gently into thegently inflated flanks. The flanks converge gradually to a rounded venter,narrower than the dorsum. In intercostal section maximum width is towards.
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Keywords: ., bookcentury1800, bookdecade1890, booki, booksubjectnaturalhistory
