F, B. Meek—Fossils of the Illinois Geological Report. 871 
genera, this very strongly marked and striking difference 
between them seems to have been entirely overlooked as a 
student should turn to figures 6, 7 and 12, of plate 1x, as well 
as to fig. 3 of plate vir. Since these remarks were published, 
however, farther examinations of other specimens have led me 
to think it quite probable (contrary to the statement on page 
828, in regard to its structure in Batocrinus Verneurlianus) that 
the deposition of crystalline inorganic matter on the delicate 
bars o 
of the same plate, it will also be seen, shows deep furrows in 
the under side of the vault of Actinocrinites ? ornatus, for the 
reception of these internal ambulacral canals, as mentioned on 
hac, 332; and fig. 9 illustrates casts of these furrows as ex- 
ibited in a cast of the interior of the vault of ~ erop the 
Same species, Upon examining these figures, 1t w! 1 be observed 
* I certainty must believe that Goldfuss was much nearer right in referring his 
oe . s than those who have 
sechitee e more nearly with the latter in the much 
xtension, composed pores 
‘ 
een, as we see in Poteriveriniian, seems to me to separate it from the latter 
Sroup entirely. 
