LOWER CRETACEOUS DEPOSITS CALIFORNIA AND OREGON

explanation op plates 281'
PLATE 30.—CRETACEOUS FOSSILS FROM CALIFORNIA
(1> la) jicnoieuiAis mitchclti nov. Holotype with reflected End. Length or
guard (incomplete), 114 mm.; maximum diameter, 21 mm. Mitchell »one, lower part
of Horsetown Group; Loo. 1057 (C. A. S.), near Mitchell Creek, 7 miles enuth of One,
Shasta County, p. 228.
(2) Acroieu/Ai* atorifi'naiu nov. Holotype. Length of guard, 175 ram.; greatest
diameter, 30 mm. Barr zone, middle part of Horse town Group; Loc. 1347 (C. A. S.),
& miles south of Ono, Shasta County, p. 223.
(3, 3a, 3b) HibotiUa diventroides nov. (3) Holotype. Length, 52 mm.; greatest
diameter, 9 mm.; length of lower section, probably part of the same individual,
23 mm. Found 600 feet below Mitchell zone, Fiddler Creek, Shasta County. (3a, 3b)
Sections of holotype. p. 231.
(4, 4a) Atalaeoteuthia tiryntMnium nov. Holotype, with reflected end view.
Length (incomplete), 63 mm.; greatest width, 12 nun. A little above the Mitchell
zone, middle part of Horactown Group; Fiddler Creek, Shasta County, p. 229.
(5) Aerolenthia kernert&ia nov, Holotype* Length of guard (incomplete),
98 m; greatest diameter, 20 mm. Paskenta Group, Devils Den district, Kent
County, p. 220.
(8, 6a) Aeroieulhia diverging nov, Holotype, with reflected end view. Length
of holotype (incomplete), 98 mm.; greatest width, 23 mm. Lower part of Mitchell
tone, Fiddler Creek, Shasta County, p. 220.
(7) flifrfllitei cigarrmdes nov. Holotype. Length (incomplete), 81 mm.; width
near middle, 10 mm. Lower part of Horsetown Group, McCarthy Creek, Tehama
County, p. 230,