line ; interradial plate large, equiform, long, broad at the base, 

 rounding by slight angles to a conical apex at the top ; first 

 radials wide, one-half as high as wide ; second and third radials 

 low and wide ; the third presenting a slight angle in the first 

 bifurcation of the arms which again divide at about the third 

 plate, as far as can be observed. Arms resemble those of L. 

 macropetahis. Column made up of various sized joints, which are 

 from one-eighth to one-fiftieth of an inch in height ; these joints 

 are rounded out slightly, and some of the larger ones seem to 

 have been formed through the anchylosing of two or more joints. 



This species is readily distinguished from L. macropetahis, which 

 it resembles in the position of the plates and arms, by the funnel- 

 form calyx, the larger basal plates, which form a cup-like shape 

 instead of the platter-like disposition which they have in the 

 other, and its large base and column, which has more than twice 

 the proportionate diameter of the other. 



From the lowest band in the shale. 



LECANOCRINUS NITIDUS (N. Sp.). PI. i, fig. 5. 



Calyx bowl-shaped, with a small, flat base ; upper part incurved 

 at the radial sutures. 



Column slender ; uniform in size, rather short; terminating in 

 a palmate, adherent root. 



Arms rapidly tapering, rounded externally. 



Basal plates extending at right angles from the column for 

 one-third of their height, and are then abruptly bent upwards at 

 an obtuse angle ; sub-radials somewhat wider than high; inter- 

 calated plate quadrangular, small ; interradial plate high and 

 narrow, about three to five ; lower angle placed to the left of the 

 median line, rounded obtuse above ; first radials wider than high, 

 about three or four to five ; of unequal sizes, prominent in the 

 center and are evenly rounded inwards at the sides, forming 

 sharply defined sutures ; upper side evenly curved downwards 

 from the upper lateral angles ; second and third radials free, 

 wide and low, proportion one to four ; third radial pentagonal, 

 rising to a sub-obtuse angle in the center, at which point the 



