CHIEOCEXTRID^. 
97 
portion; about eight enlarged teeth of variable size in advance 
of the coDcavity. Dental crowns smooth, not facetted, the apex 
often a little curved inwards. 
Form. Log. Albian—Taronian : Kent. 
47205. Imperfect right maxilla and associated vertebral centrum ; 
Gault, Polkestone. Gardner Coll. 
40146. Imperfect mandible ascribed to this species by E. T. 
Kewton, loc. cit. p. 520 ; Lower Chalk, Hailing, Kent. 
Purchased.^ 1866. 
The following specimen is not specifically determined :— 
32392. Eragmentary remains of large fish ; Upper Greensand, Isle 
of Wight. Purchased, 1857. 
The following species have also been based upon fragmentary 
remains of jaws with teeth, but are not represented in the 
Collection :— 
Portlieus australis, A. S. Woodward, Ann. lEag. Kat. Hist. [6] 
vol. xiv. (1894), p. 444, pi. x. fig. 1.—Lower Cretaceous 
(Kolling Downs Eormation): Clutha Station, near Hugh- 
enden, Gidgery Creek, Queensland. [Jaws; Geological 
Survey of Queensland, Brisbane.] 
Poriheus hrachygnathus'. Xiphactinus hracliygnathus, A. Stewart, 
Kansas Univ. Quart. [A] vol. viii. (1899), p. 107. Xiph- 
actimis lestrio, A. Stewart, ibid. vol. vii. (1898), p. 118, 
pi. viii. {errore'). —Upper Cretaceous (Kiobrara Group); 
near Gorham, Bussell Co., Kansas. [Jaws; Kansas 
University Museum.] 
Poriheus lestrio, E. D. Cope, Proc. Acad. Kat. Sci. Philad. 1873, 
p. 537, and Yert. Cret. Form. West (Bep. U. S. Geol. 
Surv. Territ. vol. ii. 1875), p. 201, pi. xlii. figs. 1-3, 
pi. xlvii. fig. 1.—Upper Cretaceous (Kiobrara Group); 
Kansas. [Imperfect skull; Cope Collection.] 
Poriheus lowi, A. Stewart, Kansas Univ. Quart. [A] vol. vii. 
(1898), p. 24, pi. ii. fig. 2.—Upper Cretaceous (Fort 
Benton Group); Fairbury, Nebraska. [Dentary bones; 
Kansas University Museum.] 
Poriheus mudgei, E. D. Cope, Bull. U.S. Geol. Surv. Territ. no. 2 
(1874), p. 40, and Yert. Cret. Form. West (1875), p. 203. 
—Upper Cretaceous (Kiobrara Group); Kansas. [Im¬ 
perfect upper jaw; Cope Collection.] 
Poriheus thamnas, E. D. Cope, Yert. Cret. Form. West (1875), 
PART IV. H 
