EXPLANATION OF PLATE XXVII. 



TEREBRATELLA PLICATA (Say), p. 364 



i-io. Two views each of five different individuals, showing some- 

 thing of the range of variation of the species. 



ATo^e-sinA marl; near Crawfords Corner, (/^6 7 ). 

 ii. The brachidium. (After Whitfield.) 



TEREBRATELLA VANUXEMI (Lyell and Forbes) ; p. 366 



12-13. Two views of a very perfect individual. 



Navesink marl; near Holmdel, (128*). 



ClSTEU,A BEECHERI Clark, p. 361 



14-17. Views of four different individuals. 



Vincentown limesand; Vincentown, (154}. 



PLATIDA CRETACEA n. sp., p. 363 



18-19. Views of the type specimens.. 



Vincentown limesand; Vincentown, (154}. 



LINGULA SUBSPATULA Hall and Meek, p. 356 



20-21. Views of two individuals. 



Woodbury clay; Lorillard, (102). 



934 



