A Monograph on the Sub-class Cirripedia (Volume 2 of 2) / The Balanidæ, (or Sessile Cirripedes); the Verrucidæ, etc., etc.

by Charles Darwin

Sectio † Carinæ umbone sub-centrali.

Sectio †† Carinæ umbone ad apicem posito.

[Sectio †.]

1. Scalpellum vulgare, Leach. (Darwin, ‘Lepadidæ,’ p. 222, Tab. 5, fig. 15.)

S. (Herm.) valvis 14, si rostrum pæne rudimentale includatur; sub-carinâ nullâ; lateribus superioribus inæqualiter ovatis.

Hab.—In maribus Europæ.

2. Scalpellum magnum, Darwin. (‘Lepadidæ Fossiles,’ p. 18, Tab. 1, fig. 1.)

S. valvis probabiliter 14, sub-carinâ nullâ; laterum carinalium et rostralium umbonibus liberè (sicut cornua) prominentibus, dimidiam seu tertiam partem longitudinis valvarum æquantibus.

Foss.—In “Coralline Crag Formatione,” Angliâ.