JTJUASSIC BRACIIIOPODS. 
101 
R. VARIABILIS.—ScAfotfj. 
Plate 21, fig. 7. 
T. variabilis, Schlotlieim, 1813; Von Bucli; Ithynchonella 
D’Orbigny; Davidson, 1. c. t. 16; f. 1-6 and 15, f. 8-10. T. 
triplicate s and T. Helens, Pliill.; Desli.; Deslongcli.; Morris ; 
Bronn. 
I prefer to consider tliis, as Mr. Etheridge also does, a 
variety of the common Lias fossil. In fact, our specimens 
more resemble Davidsoiv’s most characteristic figures than do 
British specimens from the Lower Lias; the species being 
more characteristic of the Upper Lias and Marlstone. We 
have specimens with 2, 3, and 4 raised plaits on the front. 
Our figure is not quite satisfactory. 
Rhynchonella varians of Schlotlieim is a different shell, and 
much more nearly like R. concinna. 
PENTACRINITES.-ty. 
Plate 23, fig. 11. 
JP. basaitiformis, Miller, a Lias species, is the nearest to 
our fossil. 
TOOTH OF-? 
Plate 23, fig. 12. 
