124 
SPIRIFER obtusus. 
TAB. CCLXIX.—2 Lower Figs. 
Sp. Cuar. Gibbose, transversely oval, very ob- 
scurely striated, with an obtuse rounded 
elevation along the middle ; beaks rather 
distant. 
Very much like the last but the elevated part is not flat- 
tened along the middle, but convex and the sinus at the 
edge is deeper, the beak of the lower valve is also more 
produced ; the width is full double the length. 
Sent me from Scaliber, near Settle in Yorkshire; by 
Mr. John Ducket. 
