. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 282 ANNALS OF THE SOUTH AFRICAN MUSEUM zigzags, sometimes in duplicate or bifid towards the periphery, lirae more or less articulate, peripheral carina distinctly articulated; often 2 thin red spiral lines, 1 below suture and 1 midwhorl, sometimes a third red line above the peripheral carina. Base paler, speckled or with axial streaks, and often 1-3 red spiral lines. Juvenile shells often iridescent externally, especially in alcohol. Some of the Mossel Bay and Sedgefield fossil shells retain traces o
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 282 ANNALS OF THE SOUTH AFRICAN MUSEUM zigzags, sometimes in duplicate or bifid towards the periphery, lirae more or less articulate, peripheral carina distinctly articulated; often 2 thin red spiral lines, 1 below suture and 1 midwhorl, sometimes a third red line above the peripheral carina. Base paler, speckled or with axial streaks, and often 1-3 red spiral lines. Juvenile shells often iridescent externally, especially in alcohol. Some of the Mossel Bay and Sedgefield fossil shells retain traces of the axial streaks. Jaws present, without intercalated platelets. Radula with c. 50-55 rows, central plate expanded laterally, 5 lateral plates with broad cusps, with one or two serrations, marginal plates not Fig. 19. Profiles of Cantharidus fultoni (Sow.) to show variation. Fossil: Quaternary, Klein Brak River (Mossel Bay) (Tomlin: \mosselense); Port Elizabeth (Johnson; Schwarz; Haughton); Sedgefield near Knysna ( Martin); Knysna raised beach (S. Afr. Mus.). Port Elizabeth (Sowerby); Durban (Smith); Isipingo and Durban (S. Afr. Mus.). Off Cape Morgan, 47 fathoms, 1 dead (S. Afr. Mus. coll.). Living: Delagoa Bay (S. Afr. Mus. coll. K. H. B.; also ); Inhambane and Maxixe (); Mozambique Island (). Remarks. Sowerby's description of fultoni and Smith's description of bisculptum are very similar, sometimes with almost ipsissima verba: ('strigis plerumque duplicatis' and 'strigis plus minus duplicatis^); Smith, however, did not mention fultoni, and did not compare his species with any other. Tomlin (1931a) showed that farquhari was only juvenile fultoni; and men- tioned some features which appeared to separate the unique specimen of bisculptum from fultoni, but foresaw the possibility of these differences being bridged by further material. Tomlin, according to Haughton's note (1926), had only one specimen from Mossel Bay, and therefore was unawar
Size: 2112px × 1183px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
