CIRKIPEDI4. 137 



Order XI. COPEPODA, 



and 



Order XII. RHIZOCEPHALA. 



(No Fossil representatives.) 



Order XIII. CIRRIPEDIA. 



ACASTA, Leach, 1817. 

 Acasta, Leach, 1817, Joum. de Physique, torn. Ixxxv. 



Distribution numdaue ; imbedded in sponges and the sponge-like bark of Isis. 

 Coralline Crag, Suffolk. 



Acasta undulata, Darwin, 1854. Coralline Crag, Suffolk. 



Acasta undulata, Darwin, 1854, Mon. Pal. Soc. p. 34, t. ii. figs. 6«-6/. 



BALANUS, auct. 



Conopea (pars generis), Saj-, 1822, Journ. Nat. So. Philadelphia, pt. 2. 

 Messida (pars generis). Leach, 1825, Zool. Journ. vol. ii. 

 Chirona (pars generis), J. E. Gray, 1825, Phil. Trans, p. 37. 

 Balanus, Darwin, 1854, Mon. Pal. Soc. p. 13. 

 Distribution. Tertiary and Recent. 



Balanus bisulcatus, Darwin, 1854. Coralline Crag, Suffolk. 



Balanm bi-mlcattts, Darwin, 1854, Foss. Balanida;, Mon. Pal. Soc. p. 26. t. ii 

 figs. 2 a-h. ^ ' 



Balanus bisulcatus, var. plicatus, Darwin, ibid. fig. 2 c. Coralline Crag, 

 Sutton, Eolderberg, near Hasselt, Belgium. 



Balanus calceolus, Ellis, 1758. Coralline Crag, Sutton ; 



Recent, W. coast of Africa, &c. 

 Balanm calceolus, Ellis, 1758, Phil. Trans, vol. 1. t. xxxiv. fi"-. 19: Darwin, 

 1854, Fossil Balanidic, Mon. Pal. Soc. p. 15, t. i. figs. 2 a-d° 



Balanus Chisletianus, Sowerbj-, 1823. Lower Tertiary, Grove Ferry, 



near Canterbury, Kent. 

 Balanus Chisletianus, Sowerby, 1823, Gen. of Shells ; id. 1859, Quart. Journ. 

 Geol. Soc. vol. XV. p. 134, pi. v. fig. 7. 



Balanus concavus, Bronn, 1831. Red Crag, Sutton ; Cor. Crag, Ramsholt, 

 &c., Turin, Asti, Tuscany, N. America, and Peru : 

 Recent, Panama, Australia, &c. 

 Balanus concavus, Bronu, 1831, Italiens Tertiiir-Gebilde, et 1838, Lethsea 



Geognost. Bd. ii. p. 1155, t. xxxvi. fig. 12. 

 Lcpa.t tintiunabulnm, Brocchi, 1814, Conch. Subappen. t. ii. p. 597. 

 Balanus ci/lindraceus, var. c, Lamarck, 1818, Animaux sans Vertebres; 

 Darwin, 1854, Foss. Balanidse, Mon. Pal. Soc. t. i. figs. 4 a-4p. 



T 



