Fig. 7- 



Fig. 8. 



Fig. 9. 



Fig. 10. 



Fig. II 



Fig. 12 



Fig. 13 



Fig. 14 



Fig. 15 



Fig. i6. 



Fig. 17. 



Fig. 18, 



Fig. 19. 



Fig. 20. 



Fig. 21 



PLATE XLVIII. 

 Cardium virile Dall ; Chipola beds ; alt. 28.0 mm. ; p. 10S6. 

 Cardium acrocome Dall; Chipola beds; alt. 8.0 mm.; p. 1081. 

 Protocardia jamaicense Dall ; Bowden beds ; alt. 6.0 mm. ; only a part of the 



pustulose ornamentation is intact; p. 11 14. 

 Cardium malacum Dall ; Oak Grove sands ; alt. 25.0 mm. ; p. 1087. 

 Cardium alicula Dall; Chipola beds; alt. 12.0 mm.; only a part of the nodules 



is intact, if perfect each rib would have a row of them; p. 1103. 

 Cardium apateticum Dall; Oak Grove sands; alt. ii.o mm.; this species is 



normally without nodules; p. 1105. 

 Cardium maturense Dall ; Trinidad ; alt. 6.0 mm. ; only a part of the nodula- 



tion is intact; p. 1105. 

 Cardium Simrothi Dall; Chipola beds; alt. 8.5 mm.; p. 1104. 

 Cardium Willcoxi Dall, a young shell with sculpture nearly intact; Caloosa- 



hatchie marl; alt. 8.5 mm.; p. 1106. 

 Cardium precursor Dall; silex beds. Ballast Point, Florida; alt. 22.5 mm.; 



p. 1086. 

 Cardium aminense Dall; St. Domingo; alt. 14.0 mm.; p. 1104. 

 Cardium propeciliare Dall ; Chipola beds ; alt. 20.0 mm. ; p. 1080. 

 Cardium phlyctana Dall ; Ballast Point silex beds ; alt. 27.0 mm. ; p. 1097. 

 Cardium cestum Dall; Chipola beds; alt. 32.0 mm.; p. 1083. 

 Cardium Burnsii Dall; Chipola beds; alt. 6.5 mm.; p. iioi. 

 Cardium dominicanum Dall ; St. Domingo ; alt. 28.0 mm. ; p. 1082. 

 Cardium parile Dall; Chipola beds; alt. 15.0 mm.; p. 1086. 

 Cardium delphicum Dall ; Oak Grove sands ; alt. 34.0 mm. ; p. 1084. 

 Cardium waltonianum Dall ; alt. 39.0 mm. ; p. 1093. 



Cardium (Papyridea) bulbosum DaW; Chipola beds; Ion. 27.0 mm. ; p. 1109. 

 Cardium (Lcevicardium) compressum Dall; Chipola beds; alt. 23.0 mm.; p. 



1 109. 



162I 



