PLATE X. 
PAGE 
Figs. 1-3. Squalodon atlanticus Leidy 6 
1. Portion of the right side of a jaw containing three teeth. Shiloh, 
N. J. Acad. Nat. Sci.. Phila. x % 
2, 3. Teeth from " Miocene of Maryland " labelled " Basilosaurus 
atlanticus." Acad. Nat. Sci., Phila. 
Pigs. 4, 5. Squalodon protekvus Cope 7 
4. Tooth. Charles County near the Patuxent River. Acad. Nat. 
Sci., Phila. 
5. Another tooth from the same locality and collection. 
Pig. G. PlUSCODELPIIINDS GABBI Cope 9 
0. Lumbar vertebra, lower view. Charles County near the Patuxent 
River. Acad. Nat. Sci., Phila. x % 
Figs. 7, 8. Priscodelphinus ruschenberqeri Cope 10 
7. Lumbar vertebra, lower view. Charles County. Acad. Nat. Sci., 
Phila. X % 
8. Caudal vertebra, lower view. Charles County near the Patuxent 
River. Acad. Nat. Sci., Phila. x % 
