ADDITIONS AND CORRECTIONS. 225 
Page 96. Modiola ligeriensis (VOrb.). The following should be added to the 
synonymy :—Modiola striata, Drouet, ‘Mém. Soc. Linn. de Paris,’ vol. iii (1824), 
p. 192, pl. vii, fig. 5. Non Modiolus striatus (Mont.), Maton and Rackett, 1807. 
Non Modiola striata, Defrance, 1824. 
Page 106. Septifer lineatus (Sow.). A specimen from the Beleivnitella 
mucronata zone, near Fareham (Hants), has been found by Mr. C. Griffith, of 
Winchester. 
Page 106. “Family Dreissensiide, Gray,” should be transferred to the middle 
of Page 110. 
Page 111. Line 11 should follow line 5. 
Page 112. Footnote 1. For vol. li vead vol. xlin. 
Page 135, line 3. For Kreide vead Neocoms. 
Page 143. For Pricaruna siginnina read Dimyopon Nitsson1 (Hagenow), 1842. 
Additional synonymy. 
1842. Ostrea Ntiussont, Fv. Hagenow Neues Jahrb. fiir Min., ete., p. 546. 
1891. Dimyopon Niussont, J. Bohm. Die Kreidebildungen des Fiirbergs, ete 
(Paleontographica, vol. xxxviii), p. 89, 
pl. iv, fig. 7. 
1892. — - E. Stolley. Die Kreide Schleswig-Holsteins (Mit- 
theil. a. d. Min. Instit. Universit. Kiel, 
vol. i), p. 242. 
1895. Cycnostreon Niussont, F. Vogel. Hollind. Kreide, p. 14, pl. i, figs. 4—7. 
1900. Dimyopon Niussont, K. A. Griinwall. Meddel. Dansk. geol. Foren., No. 6, 
p. 75. 
1902. - J.P. J. Ravn. Mollusk. i Danmarks Kridtaflej. I, 
Lamellibr. (K. Danske Vidensk. 
Selsk. Skrift. 6. Raekke, nat. math. 
Afd., vol. xi), p. 109. 
After the publication of Part III of this Monograph I received a copy of a 
paper by K. A. Grénwall on Dimyodon in the Danish Chalk. From the figures 
there given, and also from the one given by Bohm, I think that there can be no 
doubt as to the identity of Plicatula sigillina with the form described (but not 
figured) by von Hagenow as Ostrea Nilssoni. This identity has been confirmed by 
Mr. J. P. J. Ravn, of Copenhagen, to whom I have sent specimens of Plicatula 
sigillina from Norwich. 
30 
