EcJunodcniiata mid a Ncio BracJiiopod. — Rowley. 
-^/:) 
minihcr of pore i)ieces on eitlur side of the lancet in each 
area is from fifteen to twenty. 
Xo columnar cicatrix can he seen on an\- of the nine 
specimens and if i)resent. the stem must have heen very slen- 
der. We liave a strong" suspicion that it had no stem. The 
ornamentation of the plates is fine parallel striae. 
Horizon and locality same as tlie last. 
Calceocrlnus alleni, n. sp. 
Pl,ATK XVI. Figs. 30, 31, 32. 33. 
The two smaller hasal plates of this species are shown in 
figure 32. The columnar excavation is shallow and the col- 
umnar canal small and apparently round. The third basal is 
shown in l>otli figures 30 and 31. As usual it is nearly as 
broad as the body and short, forming a gaping suture with the 
two smaller plates. The two latteral radials are large and 
bend upon the posterior side, but do not apparently meet and 
separate the two anterior radials. The lower anterior radial 
appears to be quadrangular instead of triangular. The upper 
plate is wanting in our specimens, but was undoubtedly quad- 
rangular with its short side resting- on the upper short side 
of the post-anterior radial. This arrangement seems to 
make the lateral radials pentagonal. Arms and column un- 
known. Surface apparently smooth. 
This interesting crinoid is named specifically for my 
friand, the collector, Mr. Thos. \\'. Allen, of St. Joseph. Mo. 
The types were collected from the Clinton division of the Niagara 
Limestone at Watson Station, Pike Co., Mo. 
Glyptocrinus insperatus, n. sp. 
Plate XVI. Figs. 34, 4 2, 43. 
From the round stem base, five folds or rounded ridges 
pass out almost horizontally to the centers of the five rather 
large basal plates. Folds of similar strength extend from 
the centers of the basals to the centers of the radials, forming 
five broad, inverted ^"s. a single strong fold or ridge follow- 
ing the remaining radial area to the center of the second cos- 
tal, bifurcating" there and passing into the arms. 
The center of each intcrradial plate is occupied by a small 
tubercle from which radiate six or more delicate ridges vo 
adjoining plates. The radials are pentag-onal, the first c(^s- 
tals hexagonal, the second costals pentagonal and axilhrv. 
