ENPages
p.1
Lecanocrinus ornatus, Hall, Pal. of N.Y. Vol. 2 p. 201. pl. 44, fig. 2 - Ciathocrinos Hall, N.Y. Geol. Rep p. fig.
Calyx cup=form, spreading to the commencement of the arms; above this point the sides are nearly straight; pelvis composed of three minute anchylosed plates; second range, or costal plates having two pentagonal, one regularly hexagonal, and two unequally heptagonal; scapular plates heptagonal, succeeded by two arm=joints, upon the upper of which, or the hand=joint, commence the subdivisions which are once or twice repeated; a single quadrangular inter= costal plate on one side, and above it two interscapular plates, succeeded by two others, beyond which they have not been traced; surface ornamented by minute points or tubercles, which,
p.2
towards the margins of the plates, extend into striae or ridges, meeting similar ones from the edge of the adjoining plate; column round; joints thin, unequal alternating more or less regularly, articulating surfaces crenu= lated near the margin; canal at base of cup pentangular.,
H 0.9 D 0.75
Middle Silurian - Niagara shales.
Lockport N.York
p.3
Lecanocrinus simplex, Hall, Pal. of N.Y. Vol. 2 p. 202 pl. 46 fig. 2
Body ovoid, the smaller extrem= ity at the base; calyx composed of three minute anchylosed plates; pelvic plates elongated, three of them hexagonal and two pentagonal; four of the scapular plates equal, the fifth divid= ed, resting lower down upon the cos= tals, and producing an alternation in the joining at the lateral margins; arms dividing on the second joint above the seapular plate, no farther sub= divisions being observable; no intercostal or interscapular plates apparent; surface marked with minute ornament; column small, the joint attached showing a faint pentagonal impression.
L. 0.25 - D. 0.2
