ciRRiPEmA. 143 



Scalpellum maximum, var. sulcatum, Sowerby, 1845. 



PoUiripes maximiis, J. Sowerby, 1829, Min. Conch, pi. 606. fig. 2. 

 Scalpellum maximicin, var. sulcatum, Dai-win, 1851, Foss. Ijepadidfe, Mon. Pal. 

 Soc. p. 34, t. ii. fig. 3. 



Scalpellum quadratum, Dixon, sp., 1845. Eocene, Bognor, Hampstead. 



Xiphkliuni quadratum, Dixon, 1845, in Sowerby's Min. Conch, t. 648 ; Dixon, 



1850, Geol. Sussex, t. xiv. figs. 3, 4. 

 PoUicipra quadratAim, J. Sowerby, 1840, Trans. Geol. Soc. 2nd ser. vol. v. 



pi. viii. fig. 5. 

 Scalpellum quadratum, Darwin, 1851, Foss. Lepadidae, Mon. Pal. Soc. p. 22 



t. i. fig. 3 ; H. Woodw. & Salter, 1865, Cat. & Chart Foss. Crust, p. 27, fig. 18. 



Scalpellum simplex, Darwin, 1851. Lower Greensand, Maidstone. 



Scalpellum simplex. Darwin, 1851, Foss. LepadidfB, Mon. Pal. Soc. p. 39, t. i. 

 fig. 9. 



Scalpellum trilineatum, Darwin, 1851. Grey Chalk, Dover ; Chalk- 



marl, Charing, Kent. 

 Scalpellum trilineatum, Darwin, 1851, Foss. Lepadidie, Mon. Pal. Soc. p. 38, 

 t. i. fig. 5. 



Scalpelhim tuberculatum, Darwin, 1851. Chalk-marl, Charing, Kent. 



Scalpelhm tuherculatum, Darwin, 1851, Foss. Lepadidae, Mon. Pal. Soc. p. 43, 

 t. i. fig. 10; H. Woodw. & Salter, 1865, Cat. & Chart. Foss. Crust, p. 27, 

 fi?. 17. 



TURRILEPAS, H. Woodw. 1865. 



Chiton, De Kon. 1857, Bull. Acad. Brux. 2nd ser. vol. iii. p. 199; id. 1800, 



Ann. & Mag. Nat. Hist. 3rd ser. vol. vi. p. 97. 

 Turrilepas, H. Woodw. 1865, Quart. Joum. Geol. Soc. vol. xxi. p. 486. 

 PlumuUtes, Barrande, 1872, Svst. Sil. Boheme, Suppl. p. 505. 

 Ophscolex, Salter, 1873, Cat.Camb. & Sil. Foss. p. 129. 

 Distribution. Upper Silurian. 



Turrilepas Wrightii, H. Woodw. 1865. Wenlock Limestone, Dudley. 



Tttrrilepaa Wrightii, H. Woodw. 1865, Quart. Journ. Geol. Soc. vol. xxi 

 p. 486, pi. xiv. figs. 1-6. 



VERRUCA, Schumacher, 1817. 



Verruca, Schumacher, 1817, Essai d'un Nouveau Svst. Class. ; Darwin 



1854, Mon. Pal. Soc. p. 41. 

 Vlisi^. Leach, 1817, Journ.de Physique, t. Ixxxv. : id. 1824, Encyclop. 



Brit. Suppl. vol. iii. 

 Clitia, G. B. Sowerby, Genera of Recent and Foss. Shells. 

 Creusia. Lamarck, 1818, Animaux sans Vertebres. 

 Ochthosia, Ranzani, 1820, Memoirs di Storia Nat. 

 Distribution. Chalk and Crag. Recent, shores of N. Plurope and Britain, also 

 Ked Sea. 



