PTERIA. 57 



This species was figured from the Norwicli Cliiilk In- S. "Woodward (1833) as 

 Plaglostoma graniilosum, but apparently he was unaware that it had been previously 

 described and figured hj Nilsson under the similar name P. gmniilatum. 

 Woodward's figure seems to have been overlooked by later writers. 



Distribution. — Actiuocamax quadyatus zone of East Harnham, Salisljury. . 

 B,elemnite1la iwicronnta zone of Alderbury, Clarendon (near Salisbury), and various 

 localities near Norwich. Chalk of Trimingham. 



FaHi?7?/— PTERITD.E, Meek. 



Gemis—FTEiuA, J. A. Scojjoli, 1777.' 



(' lutrod. Hist. Nat.,' p. 397.) 



Sub-genus — Oxytoma, Meel; 1864. 



('Check List Invert. Foss., N. America,' jx 39; Meek and Hayden, ' Palaeout. TJ. Missouri,' 1864, 



Part I, p. 79.) 



Pteeia (Oxytoma) Coknueliaa'a {iVOrbigmj), 1840. Plate VIII, figs. 1, 2, 3 <i, b, 4-7. 



1836. AvicuLA MACBOPTERA, F. A. Bomer. Die Verstein. nord-deutsch. Oolitli.- 



geb., p. 86, pi. iv, fig. 5 (uon Avicula. 

 macropfera, Lamarck, 1819). 



1841. — — — Die Versteiu. d. uord-deutsch. Kreide- 



geb., p. 64. 



1846. — CoRXUELiANA, ^. crO)7;/(//!;/. Pal. Frau?. Terr. Crct., Vol. iii, p. 471 , 



pi. ccclxxxix, figs. 3, 4. 



1846. — PECTiNATA, rf'OrfcjjfKy. Ibid., p. 473, pi. cccxci, figs. 1 — 3. 



1850. — CoENUELiANA, — Prodi'. de Pal., vol. ii, p. 82. 



1850. — PECTINATA, — Ibid., p. 82. 



? 1868. — CoRNUELiANA, E. Eickwald. Letlijea Kossica, vol. ii, p. 508. pi. 



xxii, fig. 1. 

 1869. — — F. J. Pictet a)id G. Caiiipiche. Foss. Terr. Crct. Ste. 



Croix (Mater. Pal. Suisse, ser. 5), 

 p. 66, pi. dii, figs. 1 — 4. 

 1877. — — G. Buhm. Zcitschr. d. deutsch. geol. Gesellsch., vol. 



xxix, p. 237. 

 "r* 1883. — — W. Keeping. Foss., et*., Neoc. Upware aud Brick- 



hill, p. 109. pi. v, fig. 2. 

 1884. — — 0. Weerth. Die Fauna des Neoioni. im Teutoburg. 



Walde (Paheout. Abhandl., vol. ii), 

 p. 50. 



1 Svn. Avicula, Bruguii-re, 1791. 



