272 TRANS. OF THE ACAD. OF SCIENCE. 
Cell pores in lines oblique to the axis of the rays, very nu 
merous and small, varying from three to seven in the oblique 
lines according to the relative sizes of the rays, and the amount 
of expansion at the bifurcations, about three or four to each 
oscule; no material alteration in the number of lines of pores 
on the ‘same ray, except immediately below the bifurcations 
mic 
We dedicate this large and beautiful species to our friend 
Dr. B. F. Shumard, whose ——- to Western Paleon- 
merit the highest praise, and to whose kindness and 
liberality we are indebted for ‘all ris specimens which we 
ptine described i 
in this series. The expansion from whic “te 
1 is drawn is a large part of a very large corralium, 
some four inches in length by three in width. 
Formation and —— Devonian, Falls r 
the O 
