234 
ACTIl^OPTEEYGII. 
The type species, attaining a length of about 0*25. Length of 
head with opercular apparatus contained about three times in the 
length of the trunk from the pectoral arch to the base of the caudal 
fin ; maximum depth of trunk contained nearly seven times in 
the same measurement. Ornament of scutes reticulated, scarcely 
radiating. 
Form. ^ Log. Upper Cretaceous (Niobrara Group) : Smoky Hill 
Hiver, Kansas. 
Not represented in the Collection. 
Genus PANTOPHOLIS, Davis. 
[Trans. E,oy. Dublin Soc. (2) vol. iii. 1887, p. 599.] 
An imperfectly definable genus. Enlarged teeth near symphysis 
of mandible. Abdominal region much elongated, with a median 
dorsal series of overlapping scutes extending from the occiput to 
the origin of the dorsal fin ; apparently no other scutes. 
The only known species of this genus is not represented in the 
Collection :— 
Pantopholis dorsalis., J. W. Davis, loc. cit. p. 600, pi. xxxvi. 
fig. 2 ; A. S. Woodward, Ann. Mag. Nat. Hist. [7] vol. iv. 
(1899), p, 320.—Upper Cretaceous; Sahel Alma, Mt. 
Lebanon. [Distorted head with abdominal region; 
Edinburgh Museum.] 
The following specimen seems to belong to the Enchodontidse, 
but cannot be generically determined :— 
P. 4008. Elongated fish with imperfect head, small median dorsal 
fin, much-extended anal fin, and forked caudal fin ; Upper 
Cretaceous, Sahel Alma, Mt. Lebanon. There are doubtful 
traces of thin elongated scutes along the course of the 
lateral line. Lewis Coll. 
Indeterminable isolated tuberculated dermal scutes of Ench- 
odontidse have also been named as follows :— 
Acipenser cretaceus, A. Daimeries, Bull. Soc. Boy. Malacol. Belg. 
vol. xxvii. (1892), p. xvi.—Senonian; Eolx-les-Caves, 
Belgium. 
Dipnolepis jahni, A. Eritsch, Archiv. naturw. Landesdurchf. 
Bohmen, vol. ix. no. 1 (1893), p. 66, fig. 30.—Turonian 
(Priesener Schichten); Chotzen and Pardubic, Bohemia. 
[Eoyal Bohemian Museum, Prague.] 
