103 
THE SCIENTIST. 
first radial, but is about (he size of the 
second radial, hexagonal, supporting tw o 
smaller plates above, one hexagonal, and 
the other heptagonal. There is a row of 
three smaller an tl plates above these, 
succeeded by two small plates. 
First interradial plate hexagonal, 
about as large as the third radial; width 
and length equal. The two plates above 
this, smaller, hexagonal, supporting two 
elongate plates above. A small uxilbiry 
plate has been noticed in several of the 
rays. Arm oponings slightly directed 
upward. Each plate of tha vault bears 
a strong spine-like node. Anal tube, 
slender and nearly central. 
The division of the arm openings into 
groups is not noticeable. At each suture 
the angle around all the calyx plates is a 
deep pit giving the central part of each 
plate a strong convex appearance. Kadi- 
ating from the centers of the larger 
plates are more orle^is indistinct ridges. 
Type specimens collected at the very 
base of the Lower Burlington Limestone, 
at Louisiana, Mo. 
Batocrinus rotadentatus, n. sp. 
Flate 11. Fig. 17 ^ anterior view of the 
body. Fig. IS. a basal view. 
Body depressed, wheel shaped. Basal 
plates form a slightly expanded rim or 
handle and are deeply excavated below 
for the columnar attachment. Excava- 
tion larger than the column. Perforation 
very small. The basals are separated 
laterally by rather deep clefts. First 
radials hexagonal, once and a half wider 
than long. Second radials quadrangular 
and nearly twice as broad as long. Third 
radials pentagonal , wider than long and 
supporting above on upper sloping edges 
two pentagonal plates, twice as wide as 
long. Each of these in turn supports a 
secondar}^ bifurcating plate. A succeed- 
ing series of one or two higher radials to 
the arm openings. Of the three inter- 
radial plates the lowest is more than half 
as large as the first radials; width a little 
greater than the length, ten sided, sup- 
porting above two very small five sided 
plates. 01 the seven anal places the low- 
est is hexngonal and quite as large as the 
first radials. supporting three plates 
above, of which the middle one is about 
as lai-ge as the largest interradial plate, 
and ten sided; the lateral ones are small 
and hexagonal and one of these latter 
supports above a small pentiigoiial plate. 
The highest plates in the anal field are 
two wedge shaped small pieces, hardly 
breaking the ring foianed by the higher 
radials. Proboscis or anal tube nearly 
central, not stout. 
G.ilyx plate« smoolh, with little i)er- 
ceptible convexity. Plates of the dome 
nodose, sti-ongiy. 
Ai-m openings, eighteen in munbor 
and directed upward, each arm bearing 
plate forming a strong lafei-al tooth. giv- 
ing to the fossil in a basal or top view, a 
c i i-c ul a r- ? a w a ppea ranee. 
Collected in the Lower Bm-lington 
Limestone at Louisiana, Mo. 
Batocrinus inflatiis. n. sp. 
Flate II Fig 19, anterior lateral view. 
Bodv sub-gl:)buse. Calyx inflated. 
Vault convex, but low. Basal plates 
pentagonal and nearly twice as wide as 
high. First radial plates large, a little 
wider than long, hexagonal. Second 
radials. quadrangular, once and a half as 
wide as deep. Third radials more than 
half as lai-ge as first radials and one and 
a half times as wide as long, seven sided, 
supporting above two series of two 
pieces each to the arm openings. The 
first radials of the right and left posterior 
rays are seven sided. The interradial 
plates number five to each space, the 
lowest and largest being eight sided and 
about two thirds the size of a first radial. 
Above this plate and resting upon it are 
two elongate pieces, the one five and the 
other six sided, longer than wide. Above 
