GEOLOGICAL SURVEY

58 NORTH AMERICAN MESOZ01C INVERTEBRATA. [BULL. 102.
Avicula Continued.
volgensis (d'Orb) Eichwald. (1871.)
Goog.-Paleont. Bemerk. Halb. Mang. Aleutischen
Inseln., p. 189, Taf. 16, figs. 9, 10. St. Petersburg,
1871. E. Eichwald.
Formation : Cretaceous.
Location : Alaska.
(Monotis) tenuicostata n. s. M. &
H. (1858.)
Proc. Acad. Nat. Sci., Phila., for 1858, pp. 50-51.
Phila., 1S59. Meek & Haydeu.
Formation: Jurassic.
Location : Southwestern and eastern sides of
Black hills.
(Oxytoma?) gastrodes n. e.
Meek. (1873.)
Sixth Ann. Bep. U. S. Geo!. and Geogr. Sur. Terr.,
pp. 491-492. Wash., 1873. F. B. Meek.
Formation : Cretaceous.
Location: Coalville, Utah.
(Oxytoma) mucronata (M. & H.)
. Whitfield. (1880.)
Rep. Geol. Black hills of Dakota, pp. 357-358, pi.
4, figs. 1, 2. Wash., 1880. B. P. Whitfield.
Formation: Jurassic.
Location : Two miles south of the Belle Fourche
river, near Bear Lodge butto, Black hills.
(Pseudoptera) propleura n. s.
Meek. (1873.)
Sixth Ann. Rep. U. S. Geol. and Geogr. Sur. Terr.,
pp. 489-490. Wash., 1873. F. B. Meek.
Formation ; Cretaceous.
Location: Coalville, Utah.
(Pseudoptera)
Meek. deeK. ^lo/o.; (1873.)
rhytophora n. s.
Sixth Ann. Rep. U. S. Geol. and Geogr. Sur. Terr.,
pp. 490-491. Wash., 1873. F. B. Meek.
Formation: Cretaceous.
Location : Coalville, Utah.
sp. undet. Morton. (1830.)
Am. Jour. Sci., 1st ser., vol. 17, p. 286. New
Haven, 1830. S. G. Morton.
Formation : Ferruginous sand [Cretaceous.]
Location : United States.
sp. undet. Morton. (1834.)
Synop. Org. Bern. Cret. Gr. U. S., p. 63.
1834. S. G. Morton.
Formation : Cretaceous.
Location : Delaware.
Fhila.,
Aviculopecten (McCoy.) H. & W.
(1877.)
Bep. Geol. Expl. Fortieth Parallel, vol. 4, pt. 2,
p. 288. Wash., 1877. Hall & Whitfield.
altusn. 8. White. (1880.)
Bull.U. S. Geol. and Geogr. Sur. Terr., vol. 5, No.
1, p. 110. Wash., 1880. C. A. White.
Formation : Jura-Trias. [Triassic].
Location : Locality No. 3, southeastern Idaho.
Aviculopecten Continued.
idahoensis (Me'ek) White. (1880.)
Bull. U. S. Geol.'and Geogr. Sur. Terr., vol. 5, No.
1, pp. 110-111. Wash., 1880. C. A. White.
Formation: Jura-Trias. [Triassic].
Location: About sixty-five miles north of the
boundary line between Idaho and Utah, about
eighteen miles west of the boundary line between
Idaho and Wyoming, aud about five
miles south of John Gray's lake. Locality No.
1. Also, locality No. 3.
? idahoensis (Meek) White. (1883.)
Twelfth Ann. Rep. U. S. Geol. and Geogr, Sur.
Terr., pt. 1, pp. 110-11.1, pi. 32, fig. 2a. Wash.,
1883. C. A. White.
Formation : Triassic.
Location : Locality No. 1. Within the limits of
Idaho, about sixty-five miles north of the
boundary lino between that territory and Utah,
about eighteen miles west of the boundary line
between Idaho and Wyoming, and about five
miles west of Gray's lake.
pealei n. 8. White. (1880.)
Bull. U. S. Geol. and Geogr. Sur. Terr., vol. 5, No.
1, pp. 309-110. Wash., 1880. C. A. White.
Formation : Jura-Trias [Triassic].
Location : Southeastern Idaho.
? pealei White. (1883.)
Twelfth Ann. Rep. U. S. Geol. and Geogr. Sur.
Terr., pt. 1, pp. 109-110, pi. 32, fig. 4a. Wash.,
1883. C. A. White.
Formation: Triassic.
Location : Locality No. 1. Within the limits of
Idaho, about sixty-five miles north of the
boundary line between that territory and Utah,
about eighteen miles west of the boundary line
between Idaho and Wyoming, and about five
miles west of Gray's lake.
? superstrictus n. s. White. (1883.)
Twelfth Ann. Rep. U. S. Geol. aud Geogr. Sur.
Terr., pt. 1, p. 144, pi. 37, fig. 4