240 S. Lyon and S, A. Casseday on new species of Crinoidea. 
Actinocrinus, sp. nobis. 
Body, uniform, symmetrical, enlarging rapidly beneath the arms, vault 
tumidly conical, centrally surmounted by a strong proboscis nearly as 
long as the height of the body. Base plain below, slightly excavated for 
the reception of a igs column which is round, composed of alternately 
thick and thin piec 
asal pieces, freragonsl, thick, low, margin and angles rounded, slightly 
inflated, projecting beyond the ‘sa hase which it forms a ‘Pitalt- 
form border, perforation ee pen 
Second radials, very a tbodhd sneer rane as oe: as wide, 
inflated in the same manner as os first radials. 
others four ae as wi i on their oblique aie sani ae 
support a se f two secondary radials each, the second of which are ax- 
illary, sopporting usually four ee | three 2 shat giar baat 
two long ferreting uble row n oF Joints; the arms be- 
e free from the last brachial. The t two postero-lateral rays have an ad- 
ditional arm on branches joining the anal ois This _each 
In adiar pieces, The first is’ large, (inferior in size to the first radi- 
als), hexagonal, ascending sides diverging, and resting in a deep angular 
otch betw rst radi ve a ae et shoe oblique upper 
Vault, The a is covered by numerous polygonal pieces differin os 
ris ee fe in size, inflated, terminating in a point more or less 
d near the center of the pieces. 
» This like the vault is covered by polygonal ane which 
differ remarkably in size, knobbed or spinigerous, the side corresponding to 
the anal side being covered by se. 3 pentagonal pieces some of which 
bear a range of two or three knobs or spines, on the mc Sb te side the 
pieces are relatively much smaller, and the spines 
