252 BRITISH FOSSIL VERTEBRATA. 
MOROSAURWUS brevis (comminted)— 
‘Vertebra of unknown Saurian,’ G. A. Mantell, Phil. Trans., 
1841,p. 149; pl. ix, f.7. 
‘Tympanic bone of /gwanodon, G. A. Mantell, Geol. S. E. 
England, 1833, p. 305, pl. il, f. 5; R. Owen, Rep. Brit. 
Assoc., 1841 (1842), p. 124, and Rept. Weald. and Purb. 
Form., pt. ii (Pal. Soc., 1855), p. 18, pl. x. 
Loc. Wealden ; Brook, I. of Wight ; Cuckfield and Hastings, 
Sussex. [Four associated caudal vertebra ; Brit. Mus. ] 
MOSASAURUS, W. D. Conybeare, in Cuvier, Ossem. Foss., 
ed. 2, 1824, vol. v, pt. ii, p. 338. 
anceps (Owen), A. S. Woodward. v. Leiodon anceps. 
gracilis, Owen. v. Mosasaurus sp.; and Pachyrhizodus gracilis. 
[ PISCEs. ] 
hojffmanni, Mantell. v. Mosasaurus sp. 
stenodon, Charlesworth. v. Leiodon anceps and Mosasaurus? sp. 
?sp.: Mosasaurus hofmannii, G. A. Mantell, Trans. Geol. Soc. [2] 
vol. iii (1829), p. 207, and Medals of Creation, vol. ii, 1854, 
p- 708, woodcut 229 (.17. hofimannt, or M. gracilis). 
‘Fossil Monitor of Mestricht,’ G. A. Mantell, Foss. S. Downs, 
1822, p. 242, pl. xxxiii, f. 13, pl. xli,f.3. [Named Mosasaurus 
stenodon \y G. A. Mantell, Petrifactions, 1851, pp. 197, 198, 
woodcut 44.] 
Mosasaurus gracilis, R. Owen (pars), in F. Dixon, Geol. Sussex, 
1850, p. 383, pl. xxxvii, f. 2-5, pl. xxxix, f. 7-9, and Rept. Cret. 
Form. (Pal. Soc., 1851), p. 40, pl. vill, f. 1-3, pl. ix, f. 2-5. 
Genus non det., R. Lydekker, Cat. Foss. Rept. B. M., pt. i, 1888, 
p273: 
Loc. Chalk ; Essex, Kent, and Sussex. [Teeth and vertebrez ; 
Brit. Mus.] 
MURAENOSAURUS, Seeley. wv. Cimoliosaurus. 
brachyspondylus (Phillips), Sauvage. vw. Cimoliosaurus tro- 
chanterius. 
leedsi, Seeley. v. Cimoliosaurus plicatus. 
manseli (Hulke), Sauvage. wv. Cimoliosaurus trochanterius. 
MYSTRIOSAURUS, Kaup. vw. Steneosaurus. 
boliensis, D’Alton and Burmeister. wv. Steneosaurus bollensis. 
brevior (Owen), A. S. Woodward. wv. Steneosaurus brevior. 
brongniarti, Kaup. v. Pelagosaurus brongniarti. 
chapmani (Koenig), A.S. Woodward. v. Steneosaurus chapmani. 
stukelyi, Winkler. wv. Steneosaurus bollensis and S. chapmani. 
NANNOSUCHUS, R. Owen, Rept. Weald. and Purb. Form., 
Suppl. ix (Pal. Soc., 1879), p. 6. 
gracilidens, R. Owen, zécd., p. 6, pl. ii, f. 1-10, pl. il, f. 1, 2; 
R. Lydekker, Cat. Foss. Rept. B. M., pt. 1, 1889, p. 84. 
Loc. M. Purbeck ; Durdlestone Bay. [Skulland other parts of 
skeleton ; Brit. Mus. ] T. 
