256 SUPPLEMENT. 



the American Cretaceous forms described as Geratops, and the Euro- 

 pean Neocomian Struthiosaurus (Cratceomus). 



R. 1656. An imperfect bone which is provisionally regarded as one 

 (Fig.) of the horn-cores of the skull ; from the Wealden of Brook, 

 Isle of Wight. This specimen, which is described and 

 figured by the writer in the ' Quart. Journ. Geol. Soc.' 

 vol. xlvi. pt. 2, is extensively hollowed at the base, and 

 presents a striking resemblance to the horn-cores figured 

 by Marsh in the ' Amer. Journ.' ser. 3, vol. xxxvi. pi. xi., 

 as the types of Ceratops, and in a less marked degree to the 

 larger bone figured by Seeley in the ' Quart. Journ. Geol. 

 Soc' vol. xxxvii. pi. xxvii. fig. 4, as Cratceomus, and which 

 is stated by Marsh, in the ' Geol. Mag.' dec. iii. vol. vi. 

 p. 207, to belong to the skull. 



Presented by the Dorsetshire Museum, 1889. 



Family IGUANODONTTD^E (supra, i. p. 191). 



Genus CRYPTODRACO, Lydekker \ 

 Syn. Cryptosaurus, Seeley 2 . 



Typically known by the femur, which is characterized by its 

 straight and stout shaft, on which the inner trochanter forms a 

 ridge, and the absence of an intercondylar groove on the anterior 

 aspect. On the proximal aspect of this bone the head is larger 

 than the great trochanter. 



Cryptodraco eumerus (Seeley 3 ). 

 Syn. Cryptosaurus eumerus, Seeley 4 . 



The type species. Of comparatively small size, the length of the 

 femur being 0,312 (12-25 inches). 

 Bob. Europe (England). 



R. 1609. Cast of the right femur. The original, which is preserved 

 in the Woodwardian Museum, Cambridge, and is the type, 

 was obtained from the Oxford Clay, locality unknown. It 

 is figured by Seeley in the ' Quart. Journ. Geol. Soc.' 

 vol. xxxi. pi. vi., and is noticed by the writer on p. 45 of 



1 Quart. Journ. Geol. Soc. vol. xlv. p. 46 (1889). 



2 Ibid vol. xxxi. p. 149 (1875).— Preoeoupied by Geoffroy (1831). 



3 Loc. cit. — Cryptosaurus. i Loc. cii. 



