NO. 16GG. OSTEOLOGY OF CAMPTOSAURUS—GILMOliE. 291 



CAMPTOSAURUS? VALDENSIS Lydekker. 



Hypsilophodon. Lydekker, Cat. Foss. Koptilia and Amphibia. Brit. Mns., 

 Pt. 1, ISSS, pp. 195, 227; Geol. Mag., Dec. 3, V, 1888, p. 453. 



Camptosaurus valdcnsis Lydekker, Quai't. Journ. Geol. Soc. London, XLV, 

 1880, p. 48. 



Camptosaurus valdcnsis Nopcsa, Foldstani Kozlouy, Budapest, XXXI, 

 1901, p. 210. 



Holofype. — No. E. IGT, British Museum; an imperfect femur, from 

 the Weaklen of the Isle of Wight. With this Lydekker provisionally 

 associates a mandibular ramus, No. R. 180. 



Lydekker "^ records this femur as pertaining to the genus Ilypsi- 

 lophodon. Later he says: 



It is not improbable that the mandibular ramus entered on p. 227, Cat. of 

 Fossil Reptilia and Amphibia of the British Museum, as a young Iguanodont, 

 may resilly indicate a smaller adult form, allied to Laosaurus or Campto- 

 saurus, in which event the undetermined femur mentioned on p. 195 may per- 

 haps belong to the same form. 



A year later he comes to the following, conclusion regarding the 

 disposition of these specimens : 



I have called attention to an imperfect femur in the British Museum (No. 

 R. 167) from the Wealden of the Isle of Wight, which has l)een referred to 

 Hypsilophodon, and have suggested that, together with a mandibular ramus 

 (No. R. 180) from the Wealden, hitherto regarded as that of a young Igitanodon, 

 it probably Indicates a form allied to Camptosaurus. A comparison of this 

 femur with the subject of the present communication [C. Iccdsi], shows such 

 a close similarity between the two that there is every probability of their 

 generic identity ; and since there is no other evidence of the existence of a 

 Hypsilophodon of these dimensions, I propose to apply the name Camptosaurus 

 valdcnsis to the Wealden form, of which I take the femur as the type, and 

 provisionally associate with it the mandibular ramus. 



Since the type femur has not been described nor figured, a com- 

 parison with the femora of American forms can not be made at this 

 time, but, inasmuch as its resemblance to the typical femur of C. 

 leedsi was the chief reason for assigning it to this genus, there is 

 every probabilit}^ that this form is also distinct from Camptosaurus. 

 The fragmentary nature of the material upon which the species ij 

 based precludes the possibility of ever defining it adequately, and it 

 will probably always remain a species of imcertain affinities. ■ 



CAMPTOSAURUS? INKEYI Nopcsa. 



Camptosaurus inkeyi Nopcsa, Denkschr. k. k. Akad. Wien, LXYIII, 1899 

 (1900), p. 579; Foldtani Kozlony, Budapest, XXXI, 1901, p. 210. 



Holotype.—Denta.ry and a fragment of the angular from the Upper 

 Cretaceous of Transylvania (Comitat Hunyad), Hungary. 



» Catalogue of Fossil Reptilia and Amphibia in the British Museum, p. 195. 



