EXPLANATION OF PLATE LXXXI. 



LAXISPIRA LUMBRICALIS Gabb, p. 706 



1. Lateral view of a squeeze from a natural mould. 



2. Lateral view of the internal cast of the same. 



Woodbury clay; Lorillard, (/o?). 



CERITHIUM PII.SBRYI Whitfield, p. 708 



3-4. Lateral views of two plaster casts from natural moulds of 

 the exterior. 



5. Lateral view of an internal cast. 



Merchantville clay-marl; Lenola, (163). 



ANCHURA SOLITARIA Whitfield, p. 714 



6. Lateral view of a nearly perfect specimen. 



Merchantville clay-marl; near Jamesburg, (/^/). 



ANCHURA ROSTRATA (Gabb), .p. 709 



7. Lateral view of a specimen showing the form of the expanded 



aperture. 



Merchantville clay-marl; Lenola, (165). 



8. Lateral view of a specimen showing the expanded aperture. 



Merchantville clay-marl; near Matawan, (/or). 



9. Lateral view of a specimen referred doubtfully to this species. 



Wenonah sand; near Crawfords Corner, (126*). 



ANCHURA PENNATA (Morton), p. 711 



10. Lateral view of a specimen showing the expended aperture. 



Navesitik marl; Holmdel. 



n. Lateral view of a specimen whose expanded aperture is par- 

 tially preserved. 



Navesink marl; Mullica Hill, (169). 

 12-13. Two lateral views of the type specimen of A. compress* \Vhitf. 



Navesink marl; Upper Freehold. 

 14-15. Two lateral views of an incomplete internal cast. 



Navesink marl; Middletown, (//.?) 

 16-17. Two lateral views of an incomplete internal cast. 

 Navesink marl; Mullica Hill, (169). 



ANCHURA PERGRACILIS Johnson, p. 713 



18. Lateral view of a squeeze from a natural mould of the ex- 



terior. 



Woodbury clay; near Matawan, (/o/). 



19. Lateral view of a plaster cast from a natural mould, doubt- 



fully referred to this species. 



Cliffivood clay; Cliffzvood Point, (185). 



1046 



