EXPLANATION OF PLATE XXVII. 



TEREBRATELLA PUCATA ( Say ) , p. 364 



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

 thing of the range of variation of the species. 



Navesink marl; near Crawfords Corner, (126'), 

 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, (i<?<? 3 ). 



CISTELLA 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, (iO2~). 



934 



