EXPLANATION OF THE PLATES OF VOL. II. 



Pl. I. Fig. 1. Siren intermedia. 



2. Opercula of do. magnified. 



Pl. II. Prosopis glandulosa. 



a. Flower. 



b. Germ. 



c. Legume. 

 Pl. III. Phacelia integrifolia. 



a. Corolla. 



b. Calyx and germ. 

 c. d. Capsule. 



e. Seed. 

 Pl. IV. Quercus undulata. 



Pl. V. Fig. 1. Diodon carinatus. 



2. Ammonites hippocrepis. 



3. A. placenta. 



4. h 5. Undetermined Ammonite. 

 Pl. VI. Fossil Ox from the Mississippi. 



Fig. 1.) 



2. > Different views of the skull. 



