THE SOIEN^TIST. 
117 
The specific nanpe is in honor of Rev, 
John Davis of Hannibal, Mo., to whose 
cabinet the figured specimefi belongs. De- 
scribed from two specimens. 
This little fossil is interesting in that it 
occurs at a higher geological hoi izun than any 
other Batocrinoid yet described. 
Collected near Flag Pond, Va., ard found 
associated with PentremHes godonl and P. 
2njriformis in the Kaska^^kia Group, 
Agaricocrimus drcornis, n. sp. 
Plate III. Fig. 10., side view of the body. 
JSTatural size. 
Basal plates form a shallow concavity, the 
radials extend outward horizontally and form 
lobe-like ridges, the interradial spaces being 
sunken. First radials a little bro .der than 
iong. Second radials quadrangular and more 
than twice as broad as long. Third radials 
pentagonal, more than twice as broad as 
long, supporting on their upper sloping sides 
an elongate radial of the second order. The 
first anal plate is longer than wide; hepta 
gonal, succeeded above by three smaller 
pieces. The first interradial plate is longer 
than wide, octagonal, and nearly as large as 
tlie first anal plate. Two small elongate 
pieces rest upon the first interradial plate and 
extend between the arm bearing plates. 
The anal area is sunken like the interradials. 
All the plates of the calyx, except the basals 
are slightly convex centrally. The upper 
faces of the first radials of the second order, 
form five flattened hemispherical scars di- 
rected obliquely outward, with a ceniral 
longitudinal ridge. Each ray except the an- 
terior one supports two arms each, while 
the latter gives rise to but one, making nine 
arms in all. Between the arm openings 
the vault plates, like small blunt spines, ex- 
tend outward over the scars. Vault plates, 
smooth, flat, and the central one, usually in 
this genus a node or spine bearer, is perfectly 
flat. Anal opening large, a mere break in 
the almost flat vault. 
Collected in the lower Burlington Lime- 
stone at Louisiana, Mo., the species being 
described from one specimen. 
Granatocrinus api.atus n. sp. 
Plate III. Fig. 11 and 12, side and sum- 
mit view, enlarged to two diameters. 
Body, globose, a little broader than long. 
The three basal plates are rather large, 
two pentagonal and one quadrangular, 
form a flat or slightly convex surface not 
visible in a ?ide view of the body. Each 
ambulacral area contains about fifty side 
pieces; fields rather broad, not sunken below 
the inner radial lips, their lower extremi- 
ties pointing downward, and widely sepa- 
rated by the great breadth of the basal area. 
Radial pieces less than three fourths the 
length of the body, flat between the ambu- 
lacra, with granular ornamentation below, 
and distinct lines above directed laterally, 
and a little obliquely upward from the radial 
sutures to the ambulacra. Length of inter- 
radials and anal plate about one fourth that 
of the entire body, flat between the ambu- 
lacra, and with a continuation of the linear 
ornamentation of the upper part of the ra- 
dials. The lancet pieces of the ambulacra not 
exposed externally. Anal opening rather large 
with margins very prominent. Central open- 
ing large not closed in the specimens examin- 
ed. Spiracles small, eight in number. 
This little Blastoid bears a faint resem- 
blance to G. neglectus but differs in general 
outline, character of the base and ornamenta- 
tion. It is also from a higher geological 
horizon. 
Of the two type specimens, the one figured 
was found in the Upper Burlington Lime- 
stone at Louisiana, Mo., while the other is 
from the same horizon on Spencer Creek, 
north of Curryville, Mo. 
Granatocrinus concinnulus, n. sp. 
Plate III. Figs. 13 and 14 side and sum- 
mit views, enlarged to two diameters. 
Body, oval. Base rather large and com- 
posed of two larger, pentagonal and one 
