REPTILIA. 231 
GONIOPHOLIS (continued)— 
tenuidens, R. Owen, Rept. Weald. and Purb. Form., Suppl. ix 
(Pal. Soc:, 1870), p. 2, pl..i, fr; R. Lydekker, Cat. Foss, 
Rept. B. M., pt: t; 1888, p. 83. 
Loc. M. Purbeck ; Durdlestone Bay. [Mandible; Brit. Mus.] 
sp., Phillips. wv. Machimosaurus. 
HADROSAURUS, Leidy. v. Trachodon. 
HETEROSUCHUS, H. G. Seeley, Quart. Journ. Geol. Soc., 
vol. xlili, 1887, p. 212. [? Hyle@ochampsa. | 
valdensis, H. G. Seeley, zd., p. 212, pl. xii, f. 7, 8. 
Loc. Wealden; Cuckfield and Hastings, Sussex, and Brook 
Point, I. of Wight. [Vertebre ; Brit. Mus.] T. 
?sp., H. G. Seeley, zé7d., p. 215. Genus non det., R. Lydekker, Cat. 
Foss. Rept. B. M., pt. i, 1888, p. 75. 
‘Lacertian vertebra, G. A. Mantell, Phil. Trans., 1849, p. 3035 
ph xxix, f. A, A’. 
Loc. Wealden; I. of Wight. ee and limb-bones ; 
Brit. Mus., nos. 36524, R. 188.] M. Purbeck; Durdlestone 
Bay. [Cervical vertebra ; Brit. Mus., no 48244.] 
HEX ATA RSOSTIN US, T. Hawkins, Gar Sea Dragons, 1840, 
pl. xxviil. == Plesiosaurus (v. P. hawkinsi). 
Homopus comptoni (Bell), Lydekker. v. Emys comptoni. 
HOPLOSAURWUS, P. Gervais, Zool. et Pal. Franc., ed. 1, 1848-52, 
p- 263 (Oplosaurus) ; R. ‘Lydekker, Quart. Journ. Geol. Soc., 
vol. xlv, 1889, p. 396. [Non Hoplosaurus, Seeley, 1881.] 
armatus, P. Gervais, Zool. et Pal. Frang., ed. 1, 1848-52, p. 263 
(Oplosaurus); KR. Lydekker, Quart. Journ. Geol. Soc., 
vol. xlv, 1889, p. 396. [Doubtfully assigned to Ornithopsis 
hulket by R. Lydekker, zézd., vol. xliv, 1888, p- 54, pl. iii.] 
Cetiosaurus or Pelorosauros ?, R. Owen, Brit. Foss. Rept., vol. i, 
1884, p. 422. 
‘Tooth of unknown saurian,’ T. Wright, Ann. Mag. Nat. Hist. 
[2] vol. x, 1852, p. 90, woodcuts, and Proc. Cotteswold Nat. 
Field Club, vol. i, 1853, p. 231, woodcuts. 
‘Tooth of Carnivorous Reptile,’ R. Owen, Rept. Weald. and 
Purb. Form., Suppl. ii (Pal. Soc., 1859), p. 42. 
Loc. Wealden; Brixton Bay, I. of Wight. [Tooth; Brit. Mus.] 'T. 
Hydraspis planiceps, Fitzinger.. v. Stegochelys planiceps. 
HYLZEOCHAMPSA, R. Owen, Rept. Weald. and Purb. Form., 
Suppl. vi (Pal. Sec., 1874), p. 1; R. Lydekker, Geol. Mag. 
[3] vol. iv, 1887, pp. 310, 512; L. Dollo, Geol. Mag. [3] vol. iv, 
1887, p. 394. 
vectianus, R. Owen, Rept. Weald. and Purb. Form., Suppl. vi 
(Pal. Soc., 1874), p. 1, and z6zd@., Suppl. v, pl. ii, f. 23-25 ; 
[-a] R. Lydekker, Cat. Foss. Rept. B. M., pt. i, 1888, p. 77. 
Loc. Wealden; Brook, I. of Wight. [Cranium; Brit. Mus.] 'T. 
