1036 
MR. J. W. HULKE ON THE OSTEOLOGY 
may fairly be expected of English palaeontologists, for its remains occur in a manner 
quite exceptional—large parts of skeletons of this dinosaur, the bones of which are 
usually well preserved, and often maintain their normal connexions, have been 
obtained by the Rev. William Fox (lately deceased) and by myself." A study of these, 
prosecuted in leisure intervals during several years, enables me at length to offer a 
connected account of the skeleton, which I venture to hope leaves but few omissions 
to be supplied when additional materials shall have been acquired. 
The following short list contains, it is believed, the titles of all the papers which 
have been written on this dinosaur :—■ 
BIBLIOGRAPHY. 
1. Owen, R. “ Description of Part of the Skeleton of a Young Iguanodon ( Iguano- 
don Mantelli) : Monograph of the Fossil Reptilia of the Wealden Formation.” 
Pal. Soc., vol. for 1855, p. 2, plate 1. 
2. Huxley, T. “ On Hypsilophodon Foxii : a New Dinosaurian from the Wealden 
of the Isle of Wight,” Quart. Journ. Geol. Soc., vol. xxvi., p. 3, plate i. 1870. 
3. Hulke, J. W. “ Contribution to the Anatomy of Hypsilophodon Foxii” Quart. 
Journ. Geol. Soc., vol. xxix., p. 522, plate xxviii. 1873. 
4. Hulke, J. W. “Supplemental Note on the Anatomy of Hypsilophodon Foxii” 
Quart. Journ; Geol. Soc., vol. xxx., p. 18, plate iii. 1873. 
5. Owen, R. “ Skull and Teeth of Iguanodon Foxii: Fossil Reptilia of the Wealden 
Formation.” Supplement No. 5. Pal. Soc., vol. for 1873, p. 1, plates i., ii. 
6. Owen, R. Appendix to the above Supplement: “ Monograph on Iguanodon Foxii” 
P. 17. 
Shull. (Plates 71, 72.) 
In shape Lizard-like; the external nostrils are subterminal and divided; the orbital 
openings are large, and laterally directed ; the eyeball has a ring of bony plates ; and 
the temporal fossae are bounded externally by an upper and a lower bar. 
The present length of the best-preserved skull in Mr. Fox’s collectionf (Plate 71, 
figs. 2—4) is 9'6 centims. To this may be added 1 centim. for shortening due to 
displacement of the snout upon the braincase, and to slight mutilation of the occiput 
* Gisement. Remains of Hypsilophodon Foxii have as yet only been found in a bed wbicb crops out a 
short distance west of Barnes High Cliff, and passes under the shore a few yards west of Cowleaze Chine, 
on the south coast of the Isle of Wight. The rock varies much often within the space of a few yards. 
Generally the upper 3g feet of it consist of a cap of grey sandstone resting on sandy clay; this is suc¬ 
ceeded. by about the same depth of mottled-red and blue clay lying on the bands of sandstone. The 
Hypsilophodon remains are almost restricted to the lower half of the bed. The only other bones ever 
taken out of it by Mr. Fox and myself represent a small scuted Crocodilian ( Goniopholis ?) and a Chelonian 
(Trionyx f) No bones referable to Iguanodon Mantelli have ever been found by us in this bed. 
f Described in Memoirs 2, 5. I shall refer to this as Mr. Fox’s “type skull.” 
