24 
University of Texas Bulletin 
aperture slightly oblique rounded anteriorly, acute posteriorly; 
outer lip thickened, reflected, smooth within; inner lip callous, 
with three plaits, the upper one slightly above the middle of the 
aperture, the others well down. Surface marked with about 
twenty-seven revolving, well defined costella, separated by 
grooves equally as wide, and crossed by numerous fine, trans- 
verse lines. 
Locality. — Batron Creek, Austin, Texas. 
CEPHALOPODA. 
TURRILXTIDAE 
Genus TURRILITIES Lamarck. 
Turrilites brazoensis Roemer 
PI. XII, fig. 1. 
Tvrrilites brazoensis Roemer, 1849, Texas, p. 415. 
Turrilites brazoensis Roemer, 1852, Die Kreide. von Texas, p. 37, 
Taf. 3, fig. 2. 
Turrilites brazoensis Hill, 1889, Texas Geol. Sufv., Bull. No. 
4, p. 23. 
Original description — The shell large, sinistral, tubereulate ; whorls al- 
most quadrilateral, flat outside, ornamented with four rows of large tubercles; 
the tubercles of the uppermost row standing on the obtusely rounded margin 
between the broad scarcely arched lateral surface of the whorl and the narrow 
superior surface, and extending themselves into plain plaits covering the supe- 
rior surface; both middle rows consist of large, pointed tubercles, standing on 
the margin of the inner surface of the whorls and covered by the following 
whorl. The inner surface, turned toward the axis of the conical spire, covered 
with perpendicular plain plaits, which correspond to the tubercles of the lowest 
row. 
Th: specimens collected frcom the Buda are mere fragments. 
However, a fairly complete specimen from the Georgetown for- 
mation measures in height 20cm.; bnadth, 9cm. 
Locality. — Barton Creek, Shoal Creek, Austin, Texas. 
Turrilites roemeri n. sp. 
PI. XII, figs. 2, 3. 
Dimensions . — Height, 36mm.; breadth, 30mm. 
