New Bryo::oa from Nebraska. — Condra. 339 
Louisville. Type specimens in the museum of the University of Ne- 
braska, Lincoln, Nebraska, and in the collection of E. O. Ulrich. 
Meekopora prosseri Ulrkh v. sp. 
PI. XVIII. Fig. 9; P!. XIX, Figs. 1-6. 
"Zoarium bifoliate, forming palmate fronds or frequently dividing 
branches 8 to 40 mm. wide, i to 2 mm. thick; edges of branches 
nonporiferous, subacute; ;^ooecia opening on both faces of 
fronds, comparatively small, ovate, very slightly oblique, directed dis- 
tally, separated by interspaces as wide or wider than their longer di- 
ameter, arranged in rather regular intersecting series, about eleven in 
5 mm-; peristome thick, highest on the lower or lunarial side; inter- 
spaces, like the maculae, which are rather large and occur at intervals 
of 4 or 5 mm., concave and covered by minute granules. 
This fine species is related to M. clausa Ulrich, a characteristic fos- 
sil of the Chester group, but is readily distinguished by its wider 
fronds, smaller zooecial apertures, and thicker interspaces. 
The types of the species were collected some years ago by Prof. 
Charles S- Prosser (Ohio State University) and submitted to the 
author for determination and description." 
The above description and Figs, i, and ^-7 were sent to 
the writer by E. O. Ulrich, the author of the species- Nebraska 
specimens agree with this concise description, to which a few notes 
are here added. 
Zoaria usually fragmentary, rarely over 10 cm. high, generally 4 
or 5 cm., one to three mm. thick; apertures 0.16 by 0-2 mm. across,, 
eleven to thirteen in 5 mm. Diaphragms few, w-anting in some tubes; 
vesicles numerous, arranged more or less in series, not very different 
in size in different parts of the zoarium, sometimes quite filled by 
a deposit near the surface. There are two forms of growth, one with 
narrov,% and the other with wide branches. 
Position and locality: "Coal Measures; near Grenola, Elk County, 
Kansas" (L'lrich) ; Dawson, Table Rock, Bennett and Roca, Nebraska. 
Quite plentifully represented at these places, especially at Dawson in 
the railroad cuts about one-half mile west of the B- & M. depot. 
Professor E. H. Barbour secured the first specimens collected in the 
' state at Roca, in 1896. Type specimens in the collection of E. O. LH- 
rich, and in the museum of the University of Nebraska, Lincoln,. 
Nebraska. 
Batostomella leia n. sp. 
PI. XIX. Pi.ss. 7-10. 
The zoarium consists of slender irregularly branching stems sup- 
ported by a basal expansion. Branches circular in section, 3 to 5 mm. 
in diameter, surface smooth, without spines. Cell apertures subcircu- 
lar, quite regular in size, 0.14 to 0.16 mm. across, twelve to thirteen in 
5 mm., not arranged in regular vertical or diagonal series. Interspaces 
