104 EXTINCT MONSTERS. 
and Cycluras, have large processes with horny coverings, forming 
a kind of fringe or crest along the back, and, judging by analogy, 
Dr. Mantell concluded that this gigantic saurian was similarly 
armed with a row of large angular spines covered by a thick 
horny investment. As weapons of offence and defence, they 
were no doubt highly effective, but their precise arrangement 
is still a matter of speculation. 
This first specimen displayed, besides the bony scutes and 
spines, a portion of the backbone, eleven ribs and portions of 
the pectoral arch. A second specimen was found near Bolney, 
in Sussex, and was unfortunately almost wholly destroyed by the 
labourers ; but Dr. Mantell was able to obtain many of the bones, 
such as ribs and limb-bones, and they also indicated a reptile of 
great size. A third specimen was brought to light in Tilgate 
Forest in 1837; but, unfortunately, this also fell into the hands 
of the parish labourers, who were unacquainted with its value. 
Although with due care a much larger portion of the skeleton 
might have been kept, yet Dr. Mantell was able to obtain a fine 
series of twenty-six vertebrze belonging to the tail, with a total 
length of nearly six feet: the same spines were present here also. 
No specimen of the skull of this strange monster is known, 
and no teeth that can be with certainty referred to it. 
Mr. -Waterhouse Hawkins’s model at Sydenham, near the 
Iguanodon, was based on the above discoveries, which are 
insufficient, and is far from the truth. 
The next monster to be described is one that has fortunately 
left to posterity a much better record of itself, and probably was 
not very unlike the Hylosaurus of Mantell. This is the 
Scelidosaurus : so named by Professor Owen from the indications 
of greater power in the hind legs than in most saurians,’ It is 
the only known example of an almost entire skeleton of an 
English Dinosaur, and the history of its discovery is rather 
1 From Greek—scelzs, limb, and sawros, lizard. 
