72 
ACTINOPTEEYGII. 
^-''^Anogmius polymicrodus^ Stewart. 
1898. Beryx? polymicrodus, A. Stewart, Kansas Univ, Quart. [A] 
vol. vii. p. 195. 
1899. Anogmius polymicrodus, A. Stewart, ihid. vol. viii. p. 117, 
pi. xxxi. 
1900. Osmeroides polymicrodus, F. B. Loomis, Palaeontogr. vol. xlvi. 
p. 256, pi. xxvi. tigs. 1-4. 
Type. Imperfect fish ; Kansas University Museum. 
A large species probably attaining a length of about 2"5. Length 
of head with opercular apparatus equalling about two thirds the 
maximum depth of the trunk. Cranial roof coarsely rugose, and 
snout tapering to an obtuse point; length of orbit contained three 
times in the length of the cranium and twice in its interorbital 
width. 
This species seems to differ from A. aratus in its relatively larger 
orbit; from A. evolutus in its less numerous longitudinal series of 
mandibular teeth ; and from A. favirostris in the oruamentation of 
the cranium and its pointed snout. 
Form. Loc. Upper Cretaceous (Kiobrara Group): Kansas, U.S.A. 
P. 9202. Head and abdominal region; near Elkader, Logan Co., 
Kansas. Length of head with opercular apparatus 0’36, 
that of trunk from pectoral arch to position of pelvic fins 
0'65. The characteristic cranium is exposed from above, 
and the cheek-plates of the right side are well preserved. 
Nearly 40 vertebrae are shown in the length of trunk 
mentioned, and the ribs extend to the ventral border. 
Only a few of the supports of the dorsal fin remain ; but 
the paired fins are preserved, one pectoral being especially 
well displayed on the flank. The scattered scales are 
moderately thick, showing only lines of growth; they 
appear to have been deeply overlapping. Purchased, 1900. 
The following imperfectly known species are not represented in 
the Collection :— 
Anogmius aratus, E. D. Cope, Bull. U.S. Geol. Surv. Territ. 
vol. hi. (1877), p. 585.—Upper Cretaceous (Niobrara 
Group); Kansas. [The type species. Imperfect fish, 
showing part of dorsal and anal Sns.] 
Anogmius evolutus, E. B. Cope, Proc. Amer. Phil. Soc. vol. xvii. 
(1878), p. 179. Osmeroides evolutus, E. B. Loomis, Palse- 
