BALANUS CORNUBIENSIS CONICO ORE MINORE. Ellis. Phil. Trans. vol. 50, 1758, Tab. 34, fig. 16.
LEPAS BALANUS ET FISTULOSUS. Poli. Test. Siciliæ (1795), Tab. 4, fig. 5, Tab. 6, fig. 1.
BALANUS COMMUNIS. Pulteney. Dorset Catalogue, 1799.
------ ---- Montagu. Test. Brit., 1803.
LEPAS ANGUSTATA. Wood. General Conchology, 1815, Pl. 6, fig. 5.
BALANUS CRANCHII. Leach (!). (B. Blainvillii in Tab.) Encyclop. Brit. Suppl., vol. iii, 1824.
------ ---- Brown. Illust. Conch., 1827, Pl. 7, fig. 9, 10, and 2d Edit., Pl. 53, fig. 9-12.
------ PERFORATUS. Chenu. Illust. Conch., Tab. 3, fig. 9, Tab. 6, fig. 15.[92]
[92] I have very little doubt regarding any of these references: I have no means of ascertaining the priority, within the same year, of Gmelin and Bruguière, but have given it to the latter, as perforatus is much the best known specific name. English conchologists seem generally to suppose that the B. communis of Pulteney and Montagu is the [B. porcatus] of this work; but I have not the smallest doubt that I have given it rightly as a synonym of the present species; the indistinctness of the compartments, the multitude of fine ridges, the smallness of the orifice, the longitudinal furrow on the terga, the colour, size, and habitat, all given by Pulteney or Montagu, will agree with no other British species. The Lepas balanus of Poli, which is certainly a synonym of our present species, has been erroneously considered by several authors to be the same with the L. balanoides of Poli, which latter undoubtedly is the [B. amphitrite] of this work.
Shell pale purple, or white, or dirty ash-colour; smooth, or, from being corroded, finely ribbed longitudinally; sheath purple; orifice generally small; radii generally narrow or absent. Scutum, internally, with a short minute ridge, parallel and close under the prominent adductor ridge. Tergum with the apex somewhat produced.