EXPLANATION OF PLATES. 261 



19-24. Phabyngodopilus carolinensis. 



Dental armature of the jaws aud pharyngeals, magnified two diameters. 



19. Dental armature of the inferior pliaryngeal. 



20. A similar specimen from another individual. 



21. Dental armature of a superior pharyngeal. 



22. A mutilated upper maxillary with part of the dental armature. 

 23, 24. Dental armature of two mandibles, viewed externally. 

 25-30. XiPHODOLAMiA ENSis. Teeth, of the natural size. 



25, 26. Two views of a tooth, from Vincenttown, N. J. 



21. A similar tooth, from Burlington Co., N. J. 



28. A smaller tooth, from Monmouth Co., N. J. 

 29, 30. Teeth, from Yincenttown, N. J. 

 31, 32. Pristis ensidens. Two teeth of the natural size. 



33, 34. Xenodolamia pravtjs. Posterior view of two teeth, of the natural size. 

 35, 36. Xenodolamia simplex. Posterior view of two teeth, of the natural size. 

 31-4]. Sphyrjena major. Teeth, of the natural size. 



37. Tooth — probably a lateral premaxillary tooth. 

 38, 39. Lateral mandibular teeth. 

 40,41. Anterior barbed teeth. 

 42, 43. Megatherium. A first lower molar tooth, of the natural size. 



42. Triturating surface. 43. External view. 



44. Myliobates obesus. 



Natural size. Two mutilated median teeth. From Pemberton, Burlington Co., N. J. 



45 Tooth of a Shark, from the cretaceous formation of Bexar Co., Texas. Natural size. 

 Specimen recently loaned for examination by Mr. G. W. Marnock. 



61 



