12 Dr. H. Woodward — On Igiianodon MantdU. 



in the last a complete restoration is given by Mr. Hiilke.^ The 

 animal has four large and powerful digits to the hind-foot ^ and a 

 small rudimentary 5th outer toe ; an extremely small manus with 

 four small digits and a 5th rudimentary one. Mr. Hulke thinks that 

 the sharp-pointed and curved ungual phalanges indicate that it was 

 probably arboreal and rock-climbing in its habits. " The sides of 

 the crowns of the teeth are finely serrated and repeat in miniature 

 the lamelliform serration of the crown of Iguanodon Mantelli " (op. 

 ciL). 



Prof. Huxley was the first to draw special attention^ to one of the 

 most perfect remains known in Europe of a small Jurassic Dinosaur 

 from the Lithographic Stone of Solenhofen, Bavaria, and described 

 some years since by Dr. Andreas Wagner, under the name of 

 Compsognathus longipes. " It has a light head with toothed jaws, sup- 

 ported on a very long and slender neck. The ilia are prolonged in 

 front and behind the acetabulum. The pubes (?) seem to have been 



remarkably long and slender The fore-limb is very 



small ; the hind-limb is disposed as in birds, and is very large, with 

 three digits to the manus and pes. The femur, as in birds, is shorter 

 than the tibia." Notwithstanding its small size — not more than two 

 feet in length — it strikingly resembles the figure of Iguanodon 

 (Plate I.), but its proportions are more light and slender, and its 

 dentition shows that Compsognathus was carnivorous, whilst Iguanodon 

 belongs to the herbivorous type. 



Amongst the earlier discoveries of large Dinosaurians in North 

 America must be enumerated, Sadrosaurus Foidlcii, Leidy, from 

 the Cretaceous beds of New Jersey, an herbivorous animal closely 

 resembling Iguanodon, and fully twenty-eight feet in length ; and 

 Lcslaps aquilunguis, Cope, twenty-four feet long, of carnivorous 

 type like Megalosaurus. Attempted restorations of both these genera 

 were set up some years since, in the Central Park, New York, by 

 that ingenious enthusiast, B. Waterhouse Hawkins, F.G.S. (see Geol. 

 Mag., 1869, Vol. VI. p. 565), but have been since removed. 



To Prof. 0. C. Marsh, M.A., F.G.S., of Yale College, Newhaven, 

 belongs the honour of making known perhaps the largest number of 

 American Dinosaurs, some of which as, e.g., Brontosaurus excelsus,^ 

 Marsh, from the Jurassic formation of Colorado, Diplodocus longus,^ 

 Marsh, Ceratosaurus nasicornis,^ Marsh, and Allosaurus fragilis,'' Marsh, 

 have been illustrated in these pages. Altogether more than thirty 

 genera of Dinosauria have been described from North America alone. 



It is remarkable, that after more than sixty years, since the first 



1 See Phil. Trans. Eoy. Soc. 1883, vol. 173, part iii. pp. 1035-61 and pi. 71-82. 



^ In this point it agrees with Scelidosaurus Harrisoni ; but that Dinosaur was 

 furnished with rows of bony scutes, whereas Hypsilophodon has none. (See the 

 (iriginal specimens in the British Museum (Nat. Hist.)) 



•' Proceedings of the Eoyal Institution of Great Britain, Feb. 7, 1868. See also 

 Geol. Mag. 1868, Vol. V. pp. 357-365. 



* See Geol. Mag. 1883, Dec. II. Vol. X. pp. 385-388, PI. IX. 



6 Op. cit. 1884, Dec. Ill, Vol. I. pp. 99-107 (10 Woodcuts). 



6 Op. cit. 1884, pp. 252-262 (Figs. 1-5). ^ Op. cit. 1884, loc. cit. (Figs. 6-8). 



