SUPPLEMENT. 259 



the type and only known specimen, was obtained from 

 the Oxford Clay (Middle Jurassic) near Peterborough, 

 Northamptonshire, and is preserved in the collection of 

 A. N. Leeds, Esq., of Eyebury, near that town. It is 

 described and figured by the writer in the ' Quart. Journ. 

 Geol. Soc.' vol. xlv. pp. 45-48, fig. 3. 



Made in the Museum, 1888. 



Genus IGUANODON (supra, i. p. ] 95). 



Proiguanodont Group (supra, i. p. 195). 



I.fittoni shows that the flattening of the haemal surfaces of the 

 sacral vertebrae is not characteristic of all the members of this 

 group. The ilium is always relatively deep, without reflection of 

 the upper border. Iguanodon prestwichi is transferred from this 

 group to Camptosaurus, see p. 258. 



Iguanodon dawsoni (supra, i. p. 196). 



Ilium deep, without reflection of superior .border ; the preaceta- 

 bular process being comparatively shallow, with a broad horizontal 

 roof-like inward extension at its origin from the preacetabular notch, 

 and an outward inclination of its lower border near the extremity ; 

 postacetabular portion long, deep, and rounded terminally, with 

 slight inflection of inferior moiety ; pubic process directed forward. 

 Femur (infra) with nearly straight shaft, and head set approxi- 

 mately at right angles to the latter ; form of inner trochanter un- 

 known. 



These characters are given as supplementary to those mentioned 

 in Pt. I. The type ilium is refigured in the ' Quart. Journ. Greol. Soc' 

 vol. xlvi. p. 37, fig. 1 B. 



The specimens, Nos. B 604, 604 a, 811, 811 a (supra, i. pp. 198- 

 200), are referred below to /. holUngtoniensis, so that the sacrum 

 and ischium of the present form are unknown. 



R. 1627. An associated series of bones ; from the Wadhurst Clay of 

 Brede, Sussex. These specimens comprise the left scapula 

 (a) with the articular surfaces imperfect ; the shaft of the 

 left humerus (b) ; the distal two thirds of the left ulna 

 (c) ; the middle portion of the right ilium (d) ; the im- 

 perfect right femur (e), with the ventral surface embedded 

 in matrix ; the shafts of the two tibiae, and the distal ex- 

 tremity of the left tibia (/) ; the third left metatarsal 



s2 



