. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 420 ANNALS OF THE SOUTH AFRICAN MUSEUM 55 x 38 mm. (fig. 12b) has 16 ribs; the length may have been longer, as the posterior margin is broken. Nacreous area confined to the dorsal anterior third part of shell, its pos- terior margin concave dorsally to the posterior adductor scar. Anterior adduc- tor scar small, on a shelf at the tip of the shell. Byssus present (Rosewater, p. 222); confirmed in a 38 mm. specimen (Port St. Johns), and specimens (largest 97 X 55 mm.). Up to 235 mm. (Rosewater).
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 420 ANNALS OF THE SOUTH AFRICAN MUSEUM 55 x 38 mm. (fig. 12b) has 16 ribs; the length may have been longer, as the posterior margin is broken. Nacreous area confined to the dorsal anterior third part of shell, its pos- terior margin concave dorsally to the posterior adductor scar. Anterior adduc- tor scar small, on a shelf at the tip of the shell. Byssus present (Rosewater, p. 222); confirmed in a 38 mm. specimen (Port St. Johns), and specimens (largest 97 X 55 mm.). Up to 235 mm. (Rosewater). Natal (Sowerby); Durban Harbour (S. Afr. Mus.); Umzikaba, Port St. Johns (S. Afr. Mus. coll. F. H. Talbot); Umhlali (Natal) ().. Fig. 12. a, Electroma vexillum (Rve.). b, Streptopinna saccata (Linn.) (S. Afr. Mus. no. 5425) half- grown, 55 x 38 mm. c, Pinctada sp. (Mozambique Island and Inhambane). d, Pteria chinensis (Leach), Delagoa Bay. Distribution. Red Sea, east coast of Africa, Seychelles, Reunion, Mauritius, Madagascar, East Indies, Pacific. Remarks. Von Martens recorded that this species lived vertically in hollows in Madrepore corals; and Rosewater says under and between rocks; such a habitat would account for the remarkable distortion of some of the shells. Fam. Pectinidae Grau. 1959 (Eastern Pacific species). Some Indo-Pacific species: P. squamosus Gmelin, Ch. testudineus (Rve.), noduliferus (Sow.), cuneolus (Rve.) have been recorded from Natal and Durban. One suspects Sowerby's (1897) record of squamosus to refer to the later described natalensis Smith. Ch. noduliferus was sent to Smith by Quekett, Curator of the Durban Museum; the provenance of a specimen of this Mauritian shell is suspect, at least one cannot place so much reliance on its being a Natal shell. 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
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
