OF THE UNITED STATES. 81 



Turbixolia, Lam. 



T. inauris, (S. G. M.) PL xv, fig. 11. 



Specific character 



Common in the arenaceous strata of Alabama, and oc- 

 casionally met with in New Jersey. 



Alcyoxium. 



The stems of this zoophyte are not unfrequently found 

 in both strata. I have but twice seen the cup-shaped ex- 

 tremity. Mr. H. D. Rogers found, in the calcareous 

 beds of New Jersey, a perfect mould, including the base, 

 and measuring nearly ten inches in length. I have frag- 

 ments from Alabama. 



Mr. Conrad has sent me from the calcareous strata of 

 the southern states, some singular and beautiful species of 

 Zoophytes, but my knowledge of the subject is too im- 

 perfect to enable me to classify them. 



ADDENDA ET CORRIGENDA. 



The following fossils were accidentally omitted from 

 their proper places in the preceding synopsis : 



Vermetus, Sowerby. 



V. rotula, (S. G. M.) PL i, fig. 14. 



Specific character. Orbicular, volutions four or five in num- 

 ber, flattened, in contact throughout; aperture quadrangular, 

 which form is preserved in all the whorls. 



Diameter of the largest specimens, three-eighths of an inch. 



