152 CEETACEOUR LAMELLIBRANCHIA. 



field and Sandown ; the Ferriig-inous Sands of Shanklin ; the Carstone of Bon- 

 church, etc. ; the Hythe Beds of Hythe, Maidstone, Godalming, and Pulborongh ; 

 and the Sandgate Beds of Sandgate and Parham. I have not seen the specimens 

 on which these records are based. 



Gault of Folkestone (zones i — iii, ix — xi), and Black Ven. Zone of H. inter- 

 ruptiis of Okeford Fitzpaine. Recorded by the Geological Survey from the Gault 

 of Compton Bay, Culver, Blackgang, Niton, and Bonchurch, and from the Red 

 Limestone of Hunstanton. Cambridge Greensand (derived from the Gault). Upper 

 Greensand (zone of Scldmnhachia rostrata) of Blackdown, Devizes, Ventnor, 

 Selborne, and the Devon coast. Upper Greensand (zone of Peden aspeo^) of 

 Haldon, Warminster, Ventnor, and Niton. 



Chloritic Marl of Maiden Bradley and Ventnor. Chalk Marl of Folkestone, 

 Hamsey, Blue Bell Hill (Burham), Burwell, Madingley, and Hauxton. Ceno- 

 manian of Wilmington. Lower Chalk (? Chalk Marl) of Stoke Ferry. Totternhoe 

 Stone of Cherry Hinton, Fulbourn, and Burwell. Zone of //. suhglohosns of Cherry 

 Hinton. 



Pecten, sp., cf. NiLssoNi, Golilfuss, 1836. 



A species, apparently belonging to this group, has been found by Mr. R. M. 

 Brydone in the Chalk of Trimingham ; it has a smooth, or nearly smooth, thin 

 shell, with nearly equal ears, and seems to agree with P. Nilssoni, Goldfuss,^ but I 

 am unable to say whether it possesses a byssal sinus as is shown in the figures of 

 Goldfuss and Ravn. It also resembles P. viciuhranaceus, Nilsson (see p. 140), but 

 appears to have been proportionately longer, and has consequently a larger apical 

 angle and smaller ears. Only three incomplete specimens have been seen, the 

 largest having a length of about 5o mm. 



8'uh-genus — Camftonecj'es {Agassiz MS.), F. B. Med; 18G4. 



('Check List of Invert. Foss. N. AnuTica, Cret. and Jur.,' Smithson, Misc. Coll. 177, pp. 28, 39.) 



Pecten (Camptonectes) cinctus, Sowerhij, 1822. Plate XXVI II; and Text-fig. 2. 



1822. Pecten cinctus, /. Sowerhy, Min. Conch., vol iv, p. 96, pi. ccclxxi. 

 1825. — — Befrance. Diet. Sci. nat., vol. xxxviii, p. 254. 



1 Miiller (1827), p. 23, pi. x, fig. 12. aoldfuss, vol. ii (1836), p. 7Q, pi. xcix, fig. 8. Hennig (1897), 

 p. 45, pi. iii, figs. 18, 19. Vogel (1895), p. 21, pi. i, fig. 17. Kavn (1902), p. 9, pi. ii, figs. 3—5. See 

 also Romer (1841), Eeuss (1846), Favre (1869), Geinitz (1872), Brauns (1876), Fritsch (1877-97), 

 Behrens (1878), Griopeukcrl (1889), Stolley (1892), Leonhard (1897). 



