52 MK. E. LTDEKKEE ON A IfEW 



Upper "Wealden, I would suggest, without venturing to enter on the 

 vexed questiom of their homology, that the bones of the sternal 

 region of an Iguanodont figured by Mr. Hulke in vol. xli. pi. xiv. 

 fig. 1, of the Society's ' Journal,' may belong to the same form, since 

 the difference in their contour from the corresponding bones of both 

 /. Mantelli and /. bernissartensis appears to me to support the view 

 expressed by M. DoUo, that they are not referable to either of those 

 species. 



Before leaving the Iguanodonts, I may draw attention to two 

 scapulae and a coracoid from the Upper Wealden which differ some- 

 what from the corresponding bones of the skeleton of /. hernissart- 

 ensis figured by M. DoUo, although I do not know to what other 

 form to refer them. The coracoid is in the Cambridge Museum, 

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

 vol. xxxviii. pp. 367, 371, where it is provisionally referred to Orni- 

 thopsis. It is, however, essentially Iguanodont, but differs from 

 M. Dollo's coracoid of I. hemissartensis by its greater breadth, and 

 the presence of a complete foramen in place of a notch. The 

 scapulae are likewise from the Isle of Wight, and belong to the 

 Mantell Collection of the British Museum (Nos. E. 1012 and 32913). 

 The less imperfect of these bones differs from that in M. Dollo's 

 figure by its greater curvature, and also by diminishing gradually in 

 width above the proximal expansion, instead of expanding towards 

 the summit. It is totally unlike any Sauropodous scapula, and is 

 decidedly Iguanodont ; while it is not improbable that it may have 

 belonged to the same individual as some of the vertebrae of /. her- 

 nissartensis in the same collection. I do not think that these bones 

 can indicate the distinctness of /. Seelyi from /. hemissartensis, 

 especially since the Museum has a coracoid like M. Dollo's specimen, 

 associated with an ilium which cannot be distinguished from 

 Mr. Hulke's type of the former. These scapulae, besides being of 

 too large dimensions for I. Dawsoni, differ widely from the specimen 

 of that bone which I provisionally refer to that species. 



ScelidosauridcB. — The specimen to which I desire to particularly 

 direct attention under this heading is a right ilium (No. 2150), 

 from the Wealden of Cuckfield, which has long been labelled 

 Iguanodon Mantelli, but which has nothing whatever to do with that 

 genus. This specimen is figured (reversed) in the accompanying 

 woodcut ; it is clearly of an Ornithopodous type, and has long pre- 

 and postacetabular processes, of which the former is laterally com- 

 pressed, and the latter, by the giving off of an inner horizontal 

 plate, has a triangular cross-section. In general contour this ilium 

 comes nearer to that of Scelidosaurus than any other with which I 

 am acquainted, and I am therefore inclined provisionally to refer 

 it to the Wealden genus Hylceosaurus, of which the pelvis has been 

 hitherto unknown, and with the other bones of which the present 

 specimen would agree weU in relative size. This ilium presents, 

 however, a considerable resemblance to the one from the Wealden, 

 figured by Mr. Hulke in vol. xxxv. pi. xxi. of the Society's ' Journal,' 

 under the name of Vectisaurus ; and this induces me to regard the 



