ALBUI.IDiE. 
71 
A small slender species. Dorsal fin with about 45 rays ; anal 
fin with 12 or 13 rays, almost completely behind the dorsal. 
Form. Loc. Upper Cretaceous : Baumberg, Westphalia. 
P. 3892. Type specimen, apparently elongated by distortion, de- 
scribed and figured by Agassiz, loc. cit. Enniskillen Coll. 
1275 (Sloane Catal. Fishes). Specimen about Old in length, more 
satisfactorily preserved. Recorded as “ the skeleton of a 
small fish of a rusty colour lying in a fine-grained ash- 
coloured stone from Palestine ” ; but the matrix identical 
with that of specimens from the Baumberg, Westphalia. 
Sloane Coll. 
Istieus lebanonensis, Davis. 
1887. Istieus lebanonensis, J. W. Davis, Trans. Roy. Dublin Soc. [2] 
vol. iii. p. 55.3, pi. xxx. fig. 3. 
Type. Imperfect fish ; Edinburgh Museum. 
A. small stout species, known only by the unique type specimen, 
which must have originally measured about 016 in length. Head 
relatively larger than in the type species ; dorsal fin with about 
40 rays : anal fin with about 10 rays, completely behind the dorsal. 
Form. S/- Loc. Upper Cretaceous : Sahel Alma, Mt. Lebanon. 
Not represented in the Collection. 
Phe fragment from the Turonian of Bohemia named Istieus spottii 
by A. Fritsch (Sitzungsb. k. bohm. Gres. Wiss. 1879, p. 2) does not 
belong to this genus. 
Genus ANOGMIUS, Cope. 
[Bull. U.S. Geol. Surv. Territ. vol. iii. 1877, p. 584 '.] 
An imperfectly known genus, with an oxtended dorsal fin occu- 
pying the greater part of the back, and a small anal fin opposed to 
its hinder end. Teeth minute and clustered on the margin of tho 
jaws, also on the parasphonoid and other bones within the mouth. 
About 6 branchiostegal rays. Vertebra) about 80 in total number, 
the centra doeper than long and marked with fine longitudinal 
ridges or stria). Scales elliptical, not serrated or pectinated. Not 
clearly distinguished from Istieus, but apparently differing in 
presence of teeth on parasphenoid and clustering of marginal teeth. 
' The generic name Anogmius was originally given by Cope in 1871 (Proc. 
Arner. Phil. Soc. vol. xii. pp. 170, 354) to some detaohed vertebrae, specifically 
termed A. contractus. In 1875 he concluded that these vertebra: belonged to 
kachyrhizodus (Vert. Cret. Form. West, p. 220 a). In 1877 he used the same 
generic name again with a new definition as here given. 
