124 
SPIRIFER obtusus. 
TAB. CCLXIX.— 2 Lower Figs . 
Sp. Char. Gibbose, transversely oval, very ob- 
scurely striated, with an obtuse rounded 
elevation along the middle ; beaks rather 
distant. 
V ERY 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 Sealiber, near Settle in Yorkshire ; by 
Mr. John Ducket. 
