OF DENISON UNIVERSITY. 
lOI 
Length of pygidiiim, 7 mm; breadth, 12 mm; width of anterior 
portion of middle lobe, 4 mm, near the posterior termination, 2 mm 5 
the marginal groove vanishes between the third and fourth segments 
of the lateral lobes. 
Name signifies small and beautiful. 
Locality and posiimi. Soldiers’ Home Quarries. Confounded by 
collectors with small specimens of Dalmanites Werthneri. Clinton 
Group. 
Genus DALMANITES, Emmrich. 
XI. Dalmanites Werthneri, Foerste. 
{Plate VIII, Figs. 22, 22a, 23, 24, 25.) 
The figures of this species, omitted from the original description, 
are added here, for readier determination. 
Locality and position. Soldier’s Home Quarries, Clinton Group. 
Genus ENCRINURUS, Emmrich. 
XH. Encrinurus Thresheri, sp. n. 
{Plate VHI, Fig. 26.) 
Pygidium, on account of the great compression and depression 
of the lateral lobes, is longer than broad. The general form is trian- 
gular, highly arched along the entire length of the mesial lobe. Me- 
sial lobe broad anteriorly, becoming gradually attenuated posteriorly, 
crossed by segments, about 18 in number, becoming indistinct poste- 
riorly. The segments are all more or less interrupted along the me- 
sial line of the lobe, and beginning with the anterior segment, each 
third segment is supplied with a tubercle, i. e, the segments, i, 4, 7, 
10, 13 and 16. The suppression of the middle part of the anterior 
three segments is less evident. The lateral lobes are marked by seven 
segments. The anterior segments are directed laterally for a short dis- 
tance and then are deflected in a broad curve to the rear. The posterior 
deflection of the succeeding segments becomes more marked until the 
seventh pair extends in a parallel direction backwards from the mesial 
lobe. The inner terminations of the interrupted segments of the me- 
sial lobes form low nodules, often indistinct. A similar set may some- 
times be distinguished along the edges of the mesial lobe. The seg- 
