254 



SUPPLEMENT. 



by the writer in the ' Geol. Mag.' dec. iii. vol. vi. p. 353. 

 This bone accords so closely with the proximal extremity 

 of the tibia of Iguanodon, that there is no doubt but that 

 it is the corresponding bone ; and were it not apparently 

 solid throughout it might be referred to the same family. 

 Presented by Professor T. H. Huxley, 1888. 



R. 1626 a. The middle portion of a right femur agreeing in relative 

 size with the preceding ; from the same locality. Noticed 

 by Huxley, op. cit. p. 1, as a left femur of Euscelesaurus. 

 It is possible that this bone may belong to the present 

 form. Presented by Professor T. H. Huxley, 1888. 



Family SCELIDOSAURIDiE {supra, i. p. 180). 



Genus SYNGONOSAURUS, Seeley \ 



Imperfectly known, and provisionally referred to this family. 

 Dorsal vertebras with compressed centra, to which the arches are 

 firmly united, tall neural canal, and no rib-facets on the arches. 

 Terminal faces of anterior dorsals triangular, and a sharp haemal 

 ridge to centrum, which disappears later in the series. 



Syngonosa-urus macrocercus, Seeley 2 . 



The type and only described species. The following specimens 

 agree with the type dorsals, but it is not easy to see how they differ 

 from those described in the memoir cited (p. 613) as Eucercosaurus. 



Hah. Europe (England). 



R. 460. An imperfect dorsal vertebra ; from the Cambridge Green- 

 (Fig.) sand. Described and figured by the writer in the ' Quart. 

 Journ. Geol. Soc' vol. xlv. p. 43, fig. 1, and provisionally 

 referred to this species. The figure is reproduced in wood- 

 cut fig. 60. The tall and narrow neural canal is a feature 

 in addition to those mentioned in the description, in which 

 this vertebra agrees with the Scelidosauridce. 



Presented by Sir R. Owen, IuC.B., 1884. 



R. 460 a. A more imperfect dorsal vertebra, which has been trans- 

 versely fractured and the broken surfaces polished : from 



1 Quart. Journ. Geol. Soc. vol. xxxv. p. 621 (1879). 



2 Loc. cit. 



