S; Lyon and S, A, Casseday on new species of Crinoidea. 287 
rolongation was cartilaginous and the rest of the piece bony, would give 
flexibility to the won of the fom and would have a n operat ee useful 
o our similarly arranged species, whose rays are red together by 
the intercalation of thies stories of ‘intermedial and iiterbrachit fields. 
ur figures are drawn the size of nature from the largest perfect speci- 
men x has come under our notice, fragments have been found of larger 
individu Is, 
Geological position and locality, Rare in the beds of the auc: sel 
ous limestone near the top of the a“ sandstone, Clear Creek, Hard 
county, Ky. Also in the same beds in Washington and Mon nigomery 
counties, Ia, Vertical range suka, it is probable that it is ‘quite 
ed. 
Forbesiocrinus sine sp. nobis. 
Body ree rays long, promin 
Basal pieces, three, of equal oat, oa projecting beyond the column, in 
perfect opeciansins appearing like the upper joint of the column; havin 
“ unequal thickness, the thickest part being in the centre of the width of 
e pieces 
Subradials, — pentagonal, low, four times as broad as high. Radial 
pieces, the first a about — as wide as high, epee tee eae 
fourth are pentagonal, similar on their lower margins to the first, second 
and third, irioroettig in breadth at the centre where they terminate in an 
elevated point. The first — second radials join each other, the remain 
der do not touch at any poin' 
Second 
radials support each, two bailed, varying from four tc six pieces 
ly four), to the ene —— db like manner r the main eee of 
imes. 
Anal pieces, usually from fout to six, The first is the largest piece in 
the circle of subradial pieces, hexagonal ; on its upper margin is placed a 
rectangular parallelogramic piece three times as high as wide, on this 
fo three or a small pieces one above the — palo” 
nterradial pieces, Between each primary ray there is one, : 
two, hexagonal pieces. It is not dec A sa tere ol panels 
Without an interradial, in the young sine ae are seideen presen 
Interbrachials. Usually one between the main ray and the fiat divie 
ions, sometimes these pieces are found between the main branches anc 
@ second, third and firth itehiions; In well preserved specimens the 
whole body and arms are covered with minute granules, = 7 
mn, round, diminishing from the body downwards, ¢ 
uy thin circular pieces, with a still thinner | muscular opis i. ne 
@ good lens is m 
oh a 
required allie eth otic 
of the pica 
