. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 196 ANNALS OF THE SOUTH AFRICAN MUSEUM Remarks The naturally decollate apex distinguishes C. bifurcata from most members of the genus Cerithidea Swainson, 1840, certainly from all Recent Atlantic species. The closest ally to C. bifurcata appears to be C. decollata (Linnaeus, 1758), a Recent Indo-Pacific species common in mangrove swamps in Natal, but living among salt marsh vegetation in estuaries as far west as the Gamtoos River (approx. 25°05'E). C. decollata differs in possessing regular suture-to
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 196 ANNALS OF THE SOUTH AFRICAN MUSEUM Remarks The naturally decollate apex distinguishes C. bifurcata from most members of the genus Cerithidea Swainson, 1840, certainly from all Recent Atlantic species. The closest ally to C. bifurcata appears to be C. decollata (Linnaeus, 1758), a Recent Indo-Pacific species common in mangrove swamps in Natal, but living among salt marsh vegetation in estuaries as far west as the Gamtoos River (approx. 25°05'E). C. decollata differs in possessing regular suture-to-suture axial ribs, a shallower siphonal canal, a definite posterior apertural angle, and non-channelled sutures. The pupoid shape and subsutural crenules of Cerithidea bifurcata may have led to Tomlin (in Haughton 1932) misidentifying it as the Recent tropical Atlantic Cerithium guinaicum Philippi, 1849; in complete specimens shape and sculptural details are very 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 : The Museum
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
