EXPLANATION OF PLATE XXXII. 



CUCULLAEA TIPPANA Con., P. 394 



1-2. Views of the left side and posterior end of a very perfect 

 internal cast. 



Marslialltoivn clay-marl; Mar shall! own, (IQO). 



CUCULLAEA COMPRESSIROSTRA Whitf., P- 399 



3-4. Views of the posterior end and the left side of the internal 

 cast used by Whitfield as type of the species. 



Scwcll marl; Tinton Falls, (Cook's Pits'). 



CUCULLAEA VULGARIS Morton, p. 397 



5-6. Views of the right side and the posterior end of a very 

 perfect internal cast. 



Scwcll marl; near Homcrstozvn, (152). 



CUCULLAEA ANTROSA Morton, p. 391 



7. Internal cast of a large left valve. 



Navesink marl; near Walnford, (i48 4 ). 



8-9. Views of the right side and posterior end of a very perfect 

 internal cast illustrated by Whitfield. 

 Navesink marl. 



946 



