CRETACEOUS PERIOD. 



475 



Tuomey, from Alabama ; Hippurites Texanmt Roeruer, a species eight inches long 

 and four in diameter, from Texas; Cnprotina Texana Roemer, from Texas. 



Conchifers— Fig. 752, Exogyra arietina; 753, Ostrea Larva; 754, Exogyra costata ; 755, Gry- 

 phaea vesicularis; 756, G. Pitcheri ; 757, Inoceranius prublematicus. 



Figs. 758-764. 



64 



3asteropods.— Fig. 758, Fusus Newberryi; 759, Fasciolaria buccinoides ; 760, Aporrhais 

 Americana; 761, Margarita Nebrascensis ; 762, Nerinaea Texana; 763, 764, Bulla speciosa. 



