FORAMINIFERA OF THE ATLANTIC OCEAN 3 



If the Boys specimens are preserved, it would be a simple matter 

 to straighten out this tangle, but until such time as this is done 

 there is much uncertainty as to the species. In this connection 

 it is enlightening to note Montagu's comments on the Walker and 

 Jacob figures (copied from Boys), as he had at that time both the 

 original specimens and drawings. "Indeed we perceive so consid- 

 erable a difference between the original drawings * * * and 

 the engravings taken from them that we would scarce have known 

 them to be the same, had they not been marked with the same 

 numbers." 



NONION (?) CRASSULUM (Walker and Jacob) 



Plate 1, figures 2 a-b 



"Nautilus spiralis crassus utrinque umbilicatus geniculis lineatis" Walker 



and Boys, Test. Min., 1784, pi. 3. fig. 70. 

 Nautilus crassulus Walker and Jacob, in Adams's Essays, Kannmacher's ed., 



1798, p. 641, pi. 14, fig. 35. 



This species described from Reculver on the north coast of Kent, 

 England, has been little referred to and the original figure leaves much 

 to be desired. If the types are extant, it may be possible to estab- 

 lish this species on a firm basis. Williamson has referred a form to 

 it which is evidently not at all the same. The original figure is copied 

 here. 



NONION DEPRESSULUM (Walker and Jacob) 



Plate 1, figures 3-6 



"Nautilus spiralis utrinque subumbilicatulus" Walker and Boys, Test. 

 Min., 1784, p. 19, pi. 3, fig. 68. 



Nautilus depressulus Walker and Jacob, in Adams's Essays, Kannmacher's 

 ed., 1798, p. 641, pi. 14, fig. 33. 



Nonionina depressula Heron-Allen and Earland, Trans. Linn. Sec. Lon- 

 don, ser. 2, vol. 11, 1916, p. 279, pi. 43, figs. 4-7. 



There are a great many records given for this species. It was de- 

 scribed from Reculver on the north coast of Kent, England. The 

 type figure which is copied here (pi. 8, fig. 3), shows a form with many 

 low, elongate, curved chambers with a small, central, umbilical area. 

 There are very few figures indeed of this species although the number 

 of references is large. Brady's Challenger figures do not at all fit this 

 form, but seem nearer to N. umbilicatulum. Of the figures given, 

 those of Heron-Allen and Earland quoted above and copied here, 

 (pi. 8, fig. 4) seem to come the nearest to the originals, but these have 

 fewer and broader chambers. Such forms are certainly abundant 

 about the British Isles and the adjacent coast of Europe, and it seems 

 that the name should be restricted to this form. The periphery is 

 rounded, the sides slightly concave, sutures slightly limbate and 



