34 GEOLOGICAL SURVEY OF THE TERRITORIES. 
tively small; aperture rounded-suboval; surface nearly smooth, or only 
showing fine, obscure lines of growth under a magnifier. 
“ Breadth of largest specimen, 0.12 inch; height about 0.08 inch. | 
“Compared with V. subumbilicata M. & H., from the Tertiary lignites 
of the Upper Missouri country, this little shell will be readily distin- | 
guished by its smaller umbilicus, more prominent spire, and more oval 
aperture. It has also a smaller umbilicus and a less rounded aperture 
than the recent V. sincera. Its spire is more depressed, its aperture 
more oval, and umbilicus rather smaller than the living species, V. éri- 
carinata, var. simplex Say. t 
“‘ Locality and position.—Carleton’s coal-mine, Coalville, Utah. Cre- 
taceous.” 
Genus FUSUS Lamarck. 
FUSUS? UTAHENSIS Meek. 
Plate 12, fig. 2 a. 
Fusus (Neptunea) wiahensis Meek, 1873, An. Rep. U. S. Geol. Sur. Terr., for 1872, p. 505. 
‘Shell of moderate size, short fusiform; spire rather depressed, coni- 
cal; volutions four ; those of the spire a little convex ; last one large and 
ventricose, rounded or very slightly flattened around the middle, and 
contracted rather rapidly below into a narrow canal that is longer than 
the spire, and more or less bent to the left; aperture rhombic, angular 
above and narrowed and prolonged into the canal below surface, as de- 
termined from a cast in sandstone, with obscure vertical ridges, about 
twelve of which may be counted on the penultimate volution, while on 
the last or body-whorl they become nearly or quite obsolete. Re- 
volving lines probably also marked the surface of the shell, though no 
traces of anything of the kind are seen on the cast, except a shallow 
furrow above the suture on the volutions of the spire. 
“‘ Length, including canal, about 1.90 inches; breadth, 0.91 inch; angle 
of spire, about 67°. 
‘* As in the last,* we have not the means of determining the generic 
characters of this species with any degree of certainty, and merely 
place it previsionally in the genus Fusus with Neptunea in parenthesis, 
to indicate that it may be found to belong to that group. It is a rather 
decidedly larger shell than the last (#. gabbi), with a distinctly less ele- 
vated spire, and more obscure vertical ribs or varices. : 
“ Locality and position.—Coalville, Utah; from ‘Chalk Hill,’ consid- 
erably above the heavy bed of coal mined there. Cretaceous.” 
Only a single example, the one figured on plate 12, was found among 
the collections obtained and studied by Mr. Meek, but this was labeled 
in his handwriting, and is evidently his type. It is a well-marked spe- 
cies, but it is known only by imperfect casts in sandstone. 
Genus FASCIOLARIA Lamarck. 
Subgenus PIESTOCHEILUS Meek. 
FASCIOLARIA (PIESTOCHEILUS) ALLENI (sp. nov.) 
Plate 12, fig. 1 a. 
Shell slender, fusiform; spire, from the distal end of the aperture to 
the apex, one-third longer than the aperture; volutions about eight, 
* F. gabbi, figured on plate 9 of Contributions to Paleontology No. 1, published in 
the Annual Report of this Survey for 1877. 
