PLATE XXVI. 



Pa^e. 

 MoDiOLA INFLATA Whitfield 1^'^ 



Fig. 1. Eularged lateral view of the speclmea described. 

 2. Cardinal view of the same. 



ISOCARDIA CoNRADi-Gabb 200 



Fig. 3. Lateral view of Grabb'a type specimen. 



4. Anterior view of the same, copied from Gabb's figures. 



Idonearca medians Whitfield ,. 199 



Fig. 5. Lateral view of one of the examples used in description. 

 6. Cardinal view of the same. 



Gryph-ea Bryani var. precedens Whitfield 194 



Fig. 7. Lower valve of a form which is very prevalent at New Egypt and in Monmouth 

 County. 

 8. Upper view of the same. 



GRYPHiEA VESICULARIS Lamarck 194 



Figs. 9 and 10. Views of a form which is most abundant and quite characteristic of the 

 Yellow Limestones. New Egypt. 



Gryph^ostrea vomer Morton 195 



Figs. 11 and 1*2, Views of the prevalent form in the Yellow Limestones, at Timber Creek 

 and New Egypt, N. J. 



Modi OLA ovata Gabb 197 



Fig. 13. View of the right side of Mr. GabVs type specimen. 



14. View of the anterior end of another specimen, preserving the form of the beaks 

 more perfectly. 



Idone.^ RCA compressirostra Whitfield - ^ 199 



Fig. 15. Right view of a very entire specimen.. 

 16. Anterior profile view of same. 



Gastroch^na Americana Gabb 203 



Fig. 17. View of cast of this species, showing the irregular constrictions of the tube. 

 18. A similar view of another cast. 



Teredo tibialis Morton *^^01 



Fig. 19. View of a part of a group of the tube casts, showing their usual form. Nearly all 

 of these have been broken off at the lower end. 



20. Enlargement of the uj^per end of a cast, showing the muscular scar. 



21. Enlarged view of the aperture. 



22. Enlarged view of the upper end of a tube, showing the partial septa of this part 



of the tube. This and the two preceding figures are copied from Mr. Gabb's 

 figures, but have all been verified in many individuals. 



3'JO 



