Note 21 — CONCHOLOGY. PLATE XXVI. TURBO SCALARIS WENTLETRAP. Order Univalve.

Serpula Linn. Vermicularus De Montf. Vermet Adanson. The animal of the Serpulæ, it may be added further, does not differ, according to Cuvier, from those of the Linnæan Genus Turbo, and consequently not from Scalaria of Lamarck and Cuvier, as must be concluded from their admission of Turbo Clathratus among the number of its species, in an arrangement founded on the organization of the animal, as well as its testaceous habitation. Cuvier himself observes that the animal of the Vermet, and also the opening (of the shell) resemble those of the Turbo, but that the whorls do not touch, and are in part irregularly curved like the tubes of the Serpulas.—Règne Animal T. 2. 419. And his classification further shews the analogy of these tribes of shells, since the animal of the Linnæan Turbo, the Vermets of Adanson, and Scalaria of Lamarck, are all of the same family, the Gastéropodas Pectinibranches of Cuvier.