312 Mr. Say on Crinoidea. 



with elevated granules, and with two elevated interrupted lines, 

 extending to the terminal angles: costalsy four pentagonal and 

 two hexagonal, all with elevated interrupted lines, radiating from 

 the centre to the angles, with a series of truncated granules on 

 each side, and a few granules in the intervening spaces ; inter- 

 scapulars, two hexagonal, situated immediately above the hexa- 

 gonal costals : scapulars six pentagonal, the upper sides of which 

 are more or less irregular by projecting a little between the sca- 

 pulae, all with prominent lines granulated, similar to those of the 

 preceding : arms six : capital plates with a heptagonal one in the 

 middle, surrounded by five heptagonal plates and two irregular 

 ones at the mouth : mouth not prominent, situated on one side of 

 the middle, a little within the line of the arms, closed by small 

 valvular pieces, its inferior side resting on the superior angle of 

 one of the scapulars. 



Longitudinal diameter from three quarters to one inch and a 

 half; transverse diameter from seven-tenths to one inch and two- 

 fifths. 



2. C. loricatus. Costals, five pentagonal, and one hexagonal. 



Resembles the preceding, but there is only one hexagonal cos- 

 tal plate, and one interscapular plate. 



Longitudinal diameter one inch and eleven-twentieths ; trans- 

 verse diameter one inch and three-tenths. 



Dr. Bigsby obtained seven specimens of the ornatus, and one of 

 the loricatus. He informs me that *' they are found loose in brown 

 clay at the foot of the ravine at Lockport, in which the New 

 York canal mounts the parallel ridge of Lake Ontario. They 

 are extremely numerous, but almost always worn and crushed. 

 They are filled with the clay in which they are imbedded. They 

 are from one one-tenth to one-eighth of an inch thick in their 

 parietes. The clay rests upon horizontal, black, conchiferous 

 limestone, in which I found part of an encrinital stomach, bear- 

 ing a close, if not perfect resemblance to the Caryocrinites de- 

 scribed by Mr. Say." 



In the second volume of Silliman's Journal, p. 36, I instituted 

 a uew genus for the truly singular animal Reliquiuniy which Park- 

 inson called Kentuckt) Asterial Fossil. I shall now proceed to 



