Nezv Bryozoa from Nebraska.- — Condra. 349 
Fenestrules usually subcircular or elliptical on the obverse ; larger 
on the reverse where they may be subquadrate and sometimes hex- 
agonal, about as wide as long, average 0.4 mm. wide, decreasing in 
width towards the obverse face where they are 0.35 mm. long by 0.26 
mm. or less wide ; nine or nine a.nd one-half occur in 5 mm. ; except for 
the projecting apertures, they are subcircular or subelliptical on the 
obverse face- 
Zooecia in two alternating ranges, of medium size. Apertures cir- 
cular, two to each fe.nestrule, one placed at the end of each dissepiment 
with one between, a little -more than their diameter apart including the 
not very definite peristome, project slightly into the fenestrule ; eigh- 
teen to twenty in 5 mm. 
The affinities of this species are with F. conradi Ulrich and F- con- 
radi var. compactilis n. var. It differs from the former i.i having eigh- 
teen or twenty instead of twenty-three zooecia in 5 mm., two instead 
of two or three apertures to the fenestrule and a different character of 
fenestrule. On the reverse face, the branches are relatively much 
smaller compared with the obverse. The thin keel is also a distinctive 
feature. It differs from the new variety in mode of growth, char- 
acter of keel, a.nd in having a very different reverse face. The species 
is not apt to be confused with the latter. Type specimens in the mu- 
seum of the University of Nebraska, Lincoln, Nebraska. 
Position and locality: Coal Measures; South Bend and Nehaw- 
ka, Nebraska. The first specimen was collected at South Bend by 
Prof. E. H. Barbour, 1896. 
Fenestella subrudis n. sp. 
PI. XXr. Kips. 10, 11. 
Zoarium a foliar expansion of unknown size. Branches on the re- 
verse, broadly rounded, granulo-striated, slight sinuous, quite closely 
approximated. 0.35 to 0.45 mm. wide, eight in 5 mm. ; on the obverse, 
the}' are subcarinate and finished by a small carina which may be 
smooth or have inconspicuous nodes ; carina 0.06 mm. across ; nodes, 
if present, feebly elevated ; a flattened area or face extends on each 
side of the carina down to the broadest part of the branch ; these 
areas, slightly concave, are modified by the zooecial apertures. 
Dissepiments on the reverse, short, wide, expanded terminally, 
narrowly rounded, not much depressed, 0.15 to 0.2 mm. wide; they 
vary more i.n size and are faintly striated on the opposite face. 
Fenestrules elliptical to elongate-elliptical ; average on the reverse, 
0.5 to 0.55 mm. long by 0-24 mm. wide, slightly larger on the reverse, 
six in 5 mm- 
Zooecia in two alternating ranges. Apertures circular, of medium 
size, 0.13 mm. across with peristome, a little more than their own di- 
ameter apart including the peristome, three to each fenestrule, seven- 
teen or eighteen in 5 mm. The nearest related species is F. missour- 
iensis Rogers which is not very dissimilar. 
