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. 



Marshalltoii.il clay-marl; Marsliallton'n, (/oo). 



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; Tint on 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. 



Scwell marl; near Horncrstown, (152). 



CUCULLAEA ANTROSA Morton, p. 391 



7. Internal cast of a large left valve. 



Navcsink marl; near Walnford, (148*). 



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

 internal cast illustrated by Whitfield. 

 Navesink marl. 



946 



