OF THE UNITED STATES. 47 
2, Mr. Nuttall found a cast at Cahawba, Alabama, 
which seems to belong to this genus, yet has considerable 
resemblance to Luomphalus. 
TURRITELLA. 
1. T. vertebroides, (S.G. M.) PI. i, fig. 13. 
Specific character. Turrited, subulate; volutions about five, 
rounded, with fine spiral strize, and about five elevated spiral 
ribs on each whorl. 
Length, two inches. 
From New Jersey and Alabama. 
2. T. encrinoides. PI. i, fig. 7. 
Of this fossil I have met with several fragments, yet 
scarcely perfect enough for description. I have figured 
one of them, to show the difference between this and the 
former species, as the two occur in the same strata. 
SCALARIA. 
5. Sillimani, (S.G. M.) Pl. xiii, fig. 9. 
Specific character. Shell turrited; volutions contiguous, 
rounded, with very prominent, reflected coste, and very mi- 
nute spiral strie; body whorl! carinated near the base. 
Length, nearly one inch. 
From Prairie Bluff, Alabama. 
I dedicate this rare and beautiful species to my friend 
Professor Silliman, of Yale College. 
1. 5S. annulata, (5. G. M.) PI. iii, fig. 10. 
Specific character. Volutions about five, convex and pro- 
minent, with delicate transverse strie, which are decussated 
by from twenty to thirty oblique, elevated, longitudinal ribs. 
Length, one inch and a quarter. 
