GEOLOGICAL SURVEY

BOYLE.]
NORTH AMERICAN MESOZOIC 1NVEBTEBRATA. 289
Trigonoarca Continued,
saffordii (Gabb) Conrad. (1872.)
Proc. Acad. Nat. Sci., Phila., for 1872, p. 55, pi. 2
fig. 3. Phila., 1872. T-. A. Conrad.
Formation: Cretaceous.
triquetra n. s. Conrad. (1875.)
Rep. Geol. Sur. N, C., vol. 1. Raleigh, 1875
W. C. Korr.' App. A, p. 2, pi. 1, fig. 7. T. A
Conrad.
Formation: Cretaceous.
Location: Snow Hill, Grecue county, N. C.
tuniida n. s. Whiteaves. (1884.)
Geol. and Nat. Hist. Sur. Can., Mes. Foss., vol. 1
pt. 3, pp. 235, 236, pi. 31, fig. 6. Montreal
1884. J. ¥. Whiteaves.
Formation: Cretaceous.
Location: Bust end of Maud island.
tumida Whiteaves. (1889.)
Gool. and Nat. Hist. Sur. Can., Cont. Can. Paleont.
vol. 1, pt. 2, p. 167. Montreal, 1889. J. F.
Whiteaves.
Formation: Cretaceous.
Location: Rocky mountains, three miles north
of the east end of Devil's lake, Northwest Territory.
(Breviarca) congesta n. s. Conrad.
(1875.)
Rep. Geol, Sur. N. C., vol. 1. Raleigh, 1875.
W. C. Kerr. App. A, p. 3, pi. 1, fig. 2. T. A.
Conrad.
Formation: Cretaceous.
Location: Snow Hill, Greeno county, N. C.
(Breviarca) carolinensisn. s. Conrad.
(1.875.)
Rep. Geol. Sur. N. C., vol. 1. Raloigh, 1875.
W. C. Kerr. App. A, p. 3, pi. 1, fig. 4. T. A.
Conrad.
Formation: Cretaceous.
Location: Snow Hill, Greeno county, N. C.
(Breviarca) exigua (M. &H.) Meek.
(1876.)
Rep. U. S. Geol. Sur. Terr., vol. 9, pp. 93, 94,
pi. 15, figs. 2a-/ Wash., 1876. F. B. Meek.
Formation: Cretaceous.
Location: Mouth of Milk river, on the Missouri,
and near the forks of Cheyenne river.
(Breviarca) perovalis n. s. Conrad.
(1875.)
Rep. Geol, Sur. N. C., vol. 1. Raleigh, 1875.
W. C. Kerr. App. A, p. 3, pi. 1, fig. 3. T. A.
Conrad.
Formation: Cretaceous.
Location: Snow Hill, Greene county, N. C.
(Breviarca ?) saiinaensis n. s. Meek.
(1876.)
Rep. TJ. 8. Geol. Sur. Terr.,'vol. 9, pp. 92, 93,
pi. 2, figs. la-c. Wash., 1876. F. B. Meek.
Formation: Cretaceous.
Location: Twelve .miles southwest pf Saliua
Kans.
I
,. 103-19
Trigonoarca Continued.
(Breviarca ?) siouxensis (H. &M.)
Meek. (1876.)
Rep. U. S. Geol. Sur. Terr., vol. 9, p. 92, pi. 1, lig.
6. Wash., 1876. F. B. Mock.
Formation: Cretaceous.
Location: Mouth of Big Sioux river, on the Missouri.
(Breviarca) umbonatan. s. Conrad.
(1875.)
Rep. Geol. Sur. N. C., vol. 1. Raloigh, 1875.
W. C. Kerr. App. A, p. 3, pi. 1, fig. 8. T. A.
Conrad.
Formation: Cretaceous.
Location: Snow Hill, Grcone county, N. C.
Trigonodus (?) productus n. s. Whiteaves.
(1889..)
Geol. nod Nat. Hist. Sur. Can., Cont. Can. Paleont.,
vol. 1, pt. 2, pp. 135,1^0, pi. 17, flgg, 7, 7o, b.
Montreal, 1889. J. F. Whiteaves.
Formation: Triassic.
Location: Liard river, about thirty miles below
Devil's portage, Canada.
Tritonidea (aubgen. Swainson) Meek.
(1876.)
Rep. U. S. Geol. Sur. Terr., vol. 9, p. 378. Wash.,
1876. F. B. Meek. «
Tritonium (Link) Gabb. (1864.)
Geol. Sur. Gal. Paleout., vol. 1, p. 94. Phila.,
1864. W. M. Gabb.
californicum n. s. Gabb. (1869.)
Geol. Sur. Cal. Paleont., vol. 2, p. 154, pi. 26, fig.
33. Phila.,1869. W.M.Gabb.
Formation: Cretaceous.
Location: Tejon, Cal.
diegoensis n. s. Gabb. (1864.)
Geol. Sur. Cal. Paleont., vol. 1, p. 95, pi. 18, fig.
44. Phlla.,1864. W.M.Gabb.
Formation: Cretaceous.
Location; San Diego, Cal.
horniin. s. Gabb. (1864.)
Geol. Sur. Cal. Paleont., vol. 1, p. 94, pi. 28, fig.
208, Phila., 1864. W.M.Gabb.
Formation: Cretaceous.
Location: Alizos creek, near Fort Tejon; Coch-
' ran's, near Mount Diablo, Cal.
paucivaricatum n. s. Gabb. (1864.)
Geol. Sur. Cal. Paleont., vol. 2, p, 95, pi. 28, figs.
209,209a. Phila., 1864. W.M.Gabb.
Formation: Cretaceous.
Location: Alizos creek, near Fort Tejon, Cal.
whitneyi n. s. Gabb. (1864.)
Geol. Sur. Cftl. Paleont., vol. 1, p. 96, pi. 28, flgs.
210,210f. Phila., 1864. W.M.Gabb.
Formation: Cretaceous.
Location: Alizos creek, near Fort Tejon, Ca).
(Lagena ?) edentatum n. s. Gabb.
(1876.)'
Proc. Acad. Nat. Sci., Phila., for 1876, p. 381.
Phila., 1876. W.M.Gabb.
Formation: Cretaceous.
Locatjou: Pataula creek, 6%.