. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 188 ANNALS OF THE SOUTH AFRICAN MUSEUM. mm Fig. 2. Rachidian and lateral plates of Cantharidus suarezensis suarezensis (Fischer, 1878), with intermediate plate of preceding row drawn in situ. inaccurate, and the rachidian and lateral teeth are here refigured (Fig. 2). In general the dentition closely resembles that of C. (/.) strigosus (Gmelin, 1791), as figured by Fischer-Piette & Gailliard (1959: 59, fig. 1). As in many trochids there is a degenerate, non-cuspidate plate between the lateral
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 188 ANNALS OF THE SOUTH AFRICAN MUSEUM. mm Fig. 2. Rachidian and lateral plates of Cantharidus suarezensis suarezensis (Fischer, 1878), with intermediate plate of preceding row drawn in situ. inaccurate, and the rachidian and lateral teeth are here refigured (Fig. 2). In general the dentition closely resembles that of C. (/.) strigosus (Gmelin, 1791), as figured by Fischer-Piette & Gailliard (1959: 59, fig. 1). As in many trochids there is a degenerate, non-cuspidate plate between the laterals and marginals. While it seems to be conventional to follow Troschel (1879) in regarding this as an inner marginal tooth, it should be noted that this plate not infrequently bears traces of an alate side lamella, which is a characteristic of the lateral series of teeth, not the marginals. In C. suarezensis and others this intermediate plate seems to act as a buttress for the cutting head of the outermost lateral in the succeeding row. We are here relegating Jujubinus Monterosato, 1884, to subgeneric rank under Cantharidus Montfort, 1810. Although maintained as a full genus by some recent authors, Jujubinus appears to differ only in its more angular body whorl and narrower spire angle. Cantharidus suarezensis suarezensis (Fischer, 1878) Fig. 3 Trochus suarezensis Fischer, 1878: 63; 1879: 378, pi. 115 (figs 2-2a). Cantharidus suarezensis: Pilsbry, 1889: 130, pi. 45 (fig. 55). Dautzenberg, 1929: 332. Calliostoma farquhari Sowerby, 1892: 43, pi. 2 (fig. 42). Syn. nov. Caliiostoma bisculptum E. A. Smith, 1906: 54, pi. 8 (fig. 4). Syn. nov. Cantharidus fultoni (partim): Barnard, 1963a: 281, figs 14i, 19. Calliostoma interrupta (non Wood, 1828): Spry, 1968: 6. Macnae & Kalk, 1969: 127. Diagnosis Distinguished by the thin, flat-topped spiral lirae, frequently arranged in pairs, particularly medially; these lirae generally number 11-16 on the pen- ultimate whorl, more rarely as few
Size: 2488px × 1005px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
