ESOCIDJ]:.—CYPEINODONTID^. 
289 
The following specimens seem to belong to the existing Esox 
Indus, Linn. (Syst. Nat. ed. 12, vol. i. 1766, p. 516), which has 
already been recorded from the Norfolk Porest Bed Series (E. T. 
Newton, Yert. Eorest Bed, 1882, p. 123, pi. xviii. figs. 11-14);— 
P. 4925. Portion of left dentary, teeth, and caudal vertebra; Eorest 
Bed Series, West Eunton, Cromer. 
Presented hy William BarTcer, Escj[., 1885. 
P. 8703, P. 8708-11. Various fragments; Eorest Bed Series, near 
Cromer. Savin Coll. 
36858-60, P. 4848. Portions of dentaries, teeth, and vertebrae; 
Pleistocene, Copford, Essex. John Brown Coll. 
Presented hy Sir Richard Owen, K.C.B., 1860. 
45810. Teeth and fragments ; Pleistocene, Ilford, Essex. 
Brady Coll. 
36746. Numerous bones ; Southerey Een, Norfolk. 
Presented hy Prof. Alfred Newton, 1862. 
The following extinct species have also been described, but are 
not represented in the Collection :— 
Esox otto, L. Agassiz, Arbeiten schles. Ges. 1837 (1838), p. 87 
{E. ottonis, name only), and Poiss. Eoss. vol. v. pt. ii. 
(1843), p. 68, pi. xlvii.—Pleistocene; near Breslau, 
Silesia. [Detached bones.] 
Esox papyraceus, E. G. Troschel, Yerhandl. naturw. Yer. preuss. 
Eheinl. vol. xi. (1854), p. 2, pi. i. fig. 1.—Upper 
Oligocene (Lignite) ; Bott, near Bonn. [Imperfect fish ; 
Geological Wuseum, University of Bonn.] 
Esox waltschanus, H. von Meyer, Neues Jahrb. 1848, p. 426, 
and Palaeontogr. vol. ii. (1851), p. 49, pi. vi. figs. 1, 2, 
pi. vii. fig. 1.—Lower Miocene ; Waltsch, Bohemia. 
[Imperfect fish.] 
Family CYPMNODONTID^. 
Supraoccipital bone extending forwards to the frontals and 
separating the parietals in the median line; otic region prominent 
and squamosal reduced. Mandibular suspensorium inclined 
forwards and gape small; symplectic bone present ; premaxilla 
extended, excluding the maxilla from the upper border of the 
PAST IV. 17 
