PLATE XXXII. 



Figs. 44-46. Pimelodus antiquus: 



Figs. 44, 45. Fragments of pectoral spines. 



Fig. 46. Portion of a dentary bone, seen from beneath. 



Figs. 47-51. Phaeeodus acutus. Jaw fragments, from the junction of Big Sandy and Green Rivers, 

 Wyoming. 

 Fig. 47. Portion of the right premaxillary. 

 Fig. 48. Portion of left premaxillary. 

 Fig. 49. Portion of right dentary. 

 Fig. 50. Portion of left dentary. 

 Fig. 51. Portion of a maxillary. 



Figs. 52,53. Trygon (?). Caudal spine of a Pay, From the Miocene of Virginia. Fig. 52. Anterior view 

 of basal portion of the spine. Fig.53. Section of the same. Belonging to Mr. C. M. Smith. 



Figs. 54, 55. Myliobates (?). Caudal spine. Found with the preceding. 

 Fig. 54. Anterior face of basal portion. 

 Fig. 55. Section of the same. 



Figs. 56, 57. Protautoga conidens : 



Portions of premaxillaries, with teeth, from the Miocene of Virginia. Belonging to C. M. 



Smith. 

 Fig. 56. Fragment of the left premaxillary, containing the first tooth. 

 Fig. 57. Eight premaxillary, inner view, exhibiting, besides the outer row of large teeth, an 



inner row of small ones. 



Fig. 58. Acipenser ornatus: 



A dermal plate. From the Miocene of Virginia. Belonging to Mr. C. M. Smith. 



Fig. 59. ASTERACANTHUS SIDERIUS : 



Basal portion of an ichthyodorulite, lateral view. 



