234 S. Lyon and S. A. Casseday on new species of Crinoidea. 
small pieces, forming together a scutiform console “or supporting piece. 
They stand prominently above the general surface of the body; the 
and attached to the superior margin of the interbrachial fields and de- 
pending therefrom, are from five to eight long delicate plumose cilia, 
they are com of two or more rows of hexagonal pieces the same 
size throughout their whole length; they bear delicate pinnules which 
curve upwards. es 
Summit, flat or slightly elevated, nearly a regular pentagon, covered 
by » great num! er of polygonal pieces which are elevated into rounded 
knobs. About the centre is a cluster of pieces, (a central piece Sur 
rounded by five, six, or seven others,) very much larger than the remain 
der from which proceed strong, curved ridges meeting at the arms, aU 
losing five sunken fields which vary in size and in the number of the 
i rming them. Without and along the margin are fiye fields, 
lar in size and form, consisting of frem six to fifteen pieces. +4® 
mouth is situated near the centre in the largest field on the summit, and 
ean always be distinguished by the greater number and sm the 
pieces surrounding 1, it is round and depressed 
