. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 566 ANNALS OF THE SOUTH AFRICAN MUSEUM Teredo robsoni Roch Fig. 35 a, b Teredo navalis (part, non Linn.), Caiman, 1920, p. 292, fig. iB. Teredo robsoni Roch, 1931, p. 209, pi. 23; Moll & Roch, 1937, pp. 169, 178. Stalk of the pallet passing gradually into blade, which is oblong, slightly constricted near the end, distally covered by brown cuticle enclosing a cal- careous knob. Simonstown (Caiman; Moll & Roch).. Fig. 35. Pallets of Teredinidae: a, Teredo robsoni Roch, after Caiman, b, after Ro
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 566 ANNALS OF THE SOUTH AFRICAN MUSEUM Teredo robsoni Roch Fig. 35 a, b Teredo navalis (part, non Linn.), Caiman, 1920, p. 292, fig. iB. Teredo robsoni Roch, 1931, p. 209, pi. 23; Moll & Roch, 1937, pp. 169, 178. Stalk of the pallet passing gradually into blade, which is oblong, slightly constricted near the end, distally covered by brown cuticle enclosing a cal- careous knob. Simonstown (Caiman; Moll & Roch).. Fig. 35. Pallets of Teredinidae: a, Teredo robsoni Roch, after Caiman, b, after Roch. c, mannii (Wright) after Wright, and Roch & Moll, d, after Caiman.* e, massa (Jouss.) Lamy, after Roch & , specimen from East London, g, h, specimens from Knysna. i, petersi Moll, after-Moll. j, alfredensis v. Hoepen, after van Hoepen. k, clava Gmelin, after Roch & Moll. /. Bankia stutch- buryi Leach, Sow. m, capensis (Caiman). * Does not apply to mannii; see text. Remarks. Caiman regarded pedicellata Quatrefages as possibly a synonym of navalis, and in the absence of a satisfactory definition of the former, recorded the South African examples as navalis. Moll & Roch (1931) figured the pallets of navalis, pedicellata, and robsoni; navalis has the outer surface excavate distally, and no calcareous knob; the other two are not excavate but have a knob surrounded by cuticle. There seems no tangible difference between pedicellata and robsoni; and the former has been recorded from as far south as Lobito Bay, and St. Helena; in view of the north- ward-flowing Benguella current, might one perhaps say robsoni has been recorded as far north as Lobito Bay and St. Helena? (cf. Moll & Roch, 1937, p. 180). In other words, is robsoni only a synonym of pedicellata? Nevertheless the occurrence of navalis in South Africa seems not unlikely. Some specimens from wharfpiles at Mossel Bay (, 1957) have pallets shaped like those of navalis. The distal margin is exa
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