REPTILIA. 239 
ICHTHYOSAURWUS (continued)— 
lonchiodon, R. Owen, Rep. Brit. Assoc., 1839 (1840), p. 116, and 
Rept. Liassic Form., pt. iii (Pal. Soc., 1881), p. 117, pl. xxiv, 
f.6, pl. xxxi, f. 4-7, and Odontography (1841) p. 277, pl. Ixxiii, 
f.2; J. Morris, Cat. Brit. Foss., 1854, p. 349; R. Lydekker, 
Cat. Foss. Rept. B. M., pt. 11, 1889, p. 92. 
Oligostinus, T. Hawkins, Sea Dragons, 1840, pl. 11. 
Loc. L. Lias; Lyme Regis. [Skeleton ; Brit. Mus.] 
longifrons, Owen. v. Ichthyosaurus zetlandicus. 
longimanus, Owen. v. Ichthyosaurus breviceps. 
longipennis, Mantell. v. Ichthyosaurus acutirostris. 
longirostris, Owen. v. Ichthyosaurus acutirostris and Ichthyo- 
saurus latifrons. 
megalodeirus, H. G. Seeley, Index to Aves, etc., Woodwardian 
Mus., pp. xxi, 110. [? Ophthalmosaurus.| 
Loc. Oxford Clay; Woodstone Lodge, near Peterborough. 
[Parts of skeleton ; Woodwardian Mus. ] 
ovalis, J. Phillips, Geol. Oxford, 1871, p. 339; R. Lydekker, Cat. 
Foss. Rept. B. M., pt. ii, 1889, p. 29, woodcut 15. 
Loc. Kim. Clay; Kimeridge, Portland, Weymouth, Swindon, 
and Shotover. [Vertebree ; Oxford Mus.] 
paramekostinus, Hawkins. v. Ichthyosaurus intermedius. 
platymerus, H. G. Seeley, Index to Aves, etc., Woodwardian 
Mus., 1869, p. xvii (name only). 
Loc. Cambridge Greensand. [Woodwardian Mus. ] 
platyodon, W. D. Conybeare, Trans. Geol. Soc. [2] vol. i, pt. i 
(1822), p. 108, pl. xv, f. 7, pl. xvi, f. 1-7 ; W. Buckland, Geol. 
and Mineral., ed. 2, 1837, p. 20, pl. vii (?and pl. x); R. Owen. 
Odontography (1841), p. 276, pl. Ixxili, f. 3, 6, and Rept, 
Liassic Form., pt. iii (Pal. Soc., 1881), p. 115, pl. xxiv, f. 4, 
pl. xxxi, f. 1-3; G. A. Mantell, Petrifactions, 1851, p. 380; 
J. Morris, Cat. Brit. Foss., 1854, p. 349; S. Haughton, 
Manual of Geology, 1865, p. 272, woodcut 36; V. Kiprijanov, 
Mém. Acad. Imp. Sci. St. Pétersbourg, vol. xxvili, art. 8 
(1881), p. 102, pl. xviii (favs); R. Lydekker, Cat. Foss. Rept. 
B. M., pt. ii, 1889, p. 94, woodcut 34. 
[Regarded as the type of a distinct genus, Temnodontosaurus, by R. Lydekker, 
in Nicholson and Lydekker, Manual Palzeont., ed. 3 (1889), vol. ii, p. xi.) 
Ichthyosaurus immanis [C. Koenig], Syn. Contents Brit. Mus., 
ed. 17, 1820, p. 62 (the earliest specific name given to 
Ichthyosaurian remains, but undefined). [Limb-bones ; 
Brit. Mus., no. R. 809.] 
Ichthyosaurus chiroligostinus, T. Hawkins, Mem. Ichthyosauri, 
1834, pls. iii, v, and Sea Dragons, 1840, pls. iii, v. [Skeleton 
and portion of skull ; Brit. Mus.] 
Oligostinus, T. Hawkins, zbzd., 1840, pl. vi, f. 1-3. [Jaws.] 
