EXPLANATION OF PLATE LXXVII. 



AMAUR?PSIS MEEKAXA Whitfield, 



1-2. Two lateral views cf an internal cast. 

 3. Lateral view of another internal cast. 



Woodbury clay; Lorillard, (102). 



AMAUROPSIS PUNCTATA (Gabb) , p. 682 



4-6. Lateral views of three specimens, fig. 6 being that of the type 

 specimen. 



Xarcsink marl; Mitllica Hill. 



GYRODES ABYSSINA (Morton), p. 683 



7-9. Lateral, vertical and basal view of an internal cast. 

 Navesink marl; Mullica Hill (169). 



GYRODES CRENATA Conrad, p. 685 



10-12. Lateral, vertical and basal views of an internal cast. 

 Merchantvillc clay-marl; Lenola, (163). 



GYRODES PETROSUS (Morton), p. 689 



13-15. Lateral, vertical and basai views of an internal cast. 



Navesink marl; Middlctozi-n, (113}. 

 16-18. Lateral, vertical and basal views of an internal cast. 



Wenonah sand; near Crawfords Corner, (/^6 3 ). 



GYRODES ALTISPIRA (Gabb), p. 687 



19-21. Vertical and two lateral views of an internal cast. 

 Merchantville clay-marl; Lenola, (163). 



1038 



