270 
have a strict parallel to the conditions found in the Pentametrocrimis, the cirri of the Atele- 
crimis anomabis type "being characteristic of such species as Pentanietrocrinus tuhenulatus and 
/■•. diomedeae, and those of the A. balanoidcs or A. cojiifer- type occurring in such forms as 
P. varians or P. japonicus. 
The basals are very large and conspicuous, broadly seven sided, in contact laterally 
for a distance equal to about half the greatest (median) length: the proximal edge of the 
basals borderino- the swollen interradial portion of the centrodorsal is slightly concave ; the two 
adjacent proximal edges are of about the same length, but straight; the anterior angle of the 
basals is broadly obtuse, and is of the same degree as the midradial angle made b\- the 
proximal edges of adjacent basals over the proximal edge of the centrodorsal. The sides of 
the basal rino- are parallel, so that the basal ring continues the column made by the columnar 
basal third of the centrodorsal. 
The radials are slightly broader than long, in lateral contact throughout their entire 
length; their interradial angles are somewhat produced. Proximally the radials are slightly 
rounded dorsally, becoming more strongly rounded distally, especially at the sides, so that at 
the distal portion of the interradial areas there is a well marked interradial furrow. 
The IBrj are proximally about as broad as the lateral length, and distally slighdy 
broader than the lateral, though not quite twice as broad as the median, length; the lateral 
length is half again as great as the median length, due to incision by a process from the 
axillary. The lateral edges are straight, diverging somewhat, and entirely free. 
The axillaries are rhombic, the lateral angles .slightly truncated and continuing the 
direction of the lateral edges of the IBrj; the anterior angle and the posterior process incising 
the IBrj are about equally produced, and are similar; all four edges are slighdy concave. 
The first brachial is wedge shaped, with the proximal and distal edges slightly concave, 
and is about as broad as the external (greater) length; the internal length is not much more 
than half the external length; the internal edges are entirely free. The second brachial is larger 
than the first, irregularly quadrate. The third brachial is nearly twice as long interiorly as 
exteriorly, about as broad as the exterior lenght. The arms are not preserved beyond the 
syzygy between the third and fourth brachials. 
The length of the specimen from the tip of the centrodorsal to the syzygy between the 
third and fourth brachials is 9 mm. 
