REPORT OF THE STATE PALEONTOLOGIST I903 2'J'J 



Specimen C has but lo radiating grooves in the complete sigma, 

 five in each half. Specimen B seems to have no genital pore and the 

 ornamentation of the plates varies considerably from that of A. The 

 position of the madreporite is constant in all. 



The anus is large, usually appearing as a rounded pentagon. The 

 covering plates in some of the specimens seem to have been pressed 

 into the anal opening;. one specimen has the plates in position and 

 they form a gently convex mound, the plates meeting so exactly that 

 the determination of their number, whether five or six, is no easy 

 matter. They are ornamented by radiating lines of exceedingly 

 fine and close tubercles. 



The specimens so far examined have each six neck plates, but 

 there is much variation in their manner of supporting the plates of 

 the sigma. The three basals seem to be constant with no. 2 always 

 the smaller. The plate numbered 7 seems also constant in shape and 

 position and the two plates directly above it always reach and sup- 

 port the sigma plates above them. In the figures illustrating the cup 

 dis^sections I have crudely indicated the more marked umbones and 

 the more prominent ridges connecting the same. Further study 

 would no doubt enable one to designate many more of these plates 

 as constants. The specific inheritance had not become as yet so 

 fixed as to completely shut out some of the plates of an older inherit- 

 ance. The anterior plates were evidently less disturbed in their early 

 growth and so have more nearly a constant shape. Name given in 

 honor of Dr Ebenezer Emmons, former state geologist of New York. 



CRINOIDEA 



Genus lyriocrinus Hall 



Lyriocrinus? beecheri sp. nov. 



Plate 3, figures 1-4 



Description. Cup small, but 6mm from base to upper angle of 

 primaxil [lAx], while the whole crown from base to top of incurved 

 arms is 21mm ; the cup has been crushed and thus slightly widened, 

 but the greatest width still measures but little over 7mm. Proximal 

 joint of column round and sunken in a hollow base formed by a 

 strong infolding of the proximal portion of the basals ; column next 



