292 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxvi. 



The original preliminary description of this species, which ap- 

 pears as a footnote in Nopcsa's paper on Limnosaurus transsylvanicus 

 in the publication cited above, is as follows : 



Caniptosaurits inkcyi uew spec, (nach Herrn Bela Inkey ehemaligen Chef- 

 geologen cler k. ung. geol. Anstalt als Zeiehen meiner Dankbarkeit fiir die 

 zablreielien Winke, (lurch die er mir das Studium der geologisclieu Yerbjiltnisse 

 des Hatszegertliales wesentlich erleichterte). Nur Dentale und ein Fragment 

 der Angulare erhalten. Partie bei der Symphyse drcikantig und auf spitzeu 

 Scbnabel binweisend. Keine eigene Sympbysenflacbe, sondern die Kieferspitze 

 innen und ausseu raub sculpirt, was auf liganientose ^"erbindung deutet. Fora- 

 men mentale vorbanden. Eine dariiber gelegene Itinne (wie bei den Iguanodon- 

 tiden) feblt. Ober- und Uuterrand des Kiefers nicbt parallel. Uuterrand 

 etwas- gekriimmt wie bei Hypsilophodon (Hulke 1882). Innerand bei den 

 Alveolen gleich boch mit dem Aussenrand. Die interne Rinne und die Foramina 

 (10) sebr stark entwickelt. 10 Alveolen. ZJilme iibnlicb wei bei Cumptosaurun, 

 jedocb regelmiissiger gekerbt. Obne bemerkenswertben Mediankiel. Eine 

 detaillirtere Beschreibung soil bei einer anderen Gelegenheit gegeben werden. 



From the above description it is at once apparent that the dentary 

 of Camptosaurus inkeyi is quite unlike those of the American species, 

 so far as known. In C: dispar, as shown in fig. 8, the outer and 

 inner surfaces of the anterior end of the dentary are reasonably 

 smooth; the upper and Icwer borders parallel, the ventral nearly 

 straight, curved slightly if at all; internal alveolar border lower than 

 external ; fifteen to sixteen alveoli ; teeth with one or more prominent 

 and many secondary longitudinal ridges. A comparison of these 

 characters with those described by Xopcsa shows but few in common. 

 These appear to be in the presence of the foramen mentale, the curved 

 teeth, and the presence of a longitudinal groove below the internal 

 alveolar border pierced by the foramini, the latter, however, being 

 more numerous in the American species. 



The wide differences shown in the above brief review appear to 

 indicate at least the gt aerie distinction of the form under considera- 

 tion, but since Nojicsa has promised a more detailed description of 

 his specimen, I shall leave the matter to him for final disposition. 



CAMPTOSAURUS DEPRESSUS, new species. 



Camptosaurus Lucas, Proc. U. S. Nat. Mus., XXIII, No. 1224, p. 591. 



Holotijpe.—Cat No. 4753, U.S.N.M. Collected by Mr. N. H. Bar- 

 ton, of the U. S. Geological Survey, in " Calico Canyon," near Buffalo 

 Gap Station, South Dakota, from beds considered by him to be of 

 Lower Cretaceous age (Lakota sandstone). 



The type specimen consists of portions of both ilia, anterior part 

 of the blade of one pubis, an incomplete sacrum, centrum of the last 

 or sacro-dorsal, 12 caudal vertebra^, 1 thoracic rib, and many frag- 

 ments. This specimen was associated with the fragmentary skeleton, 

 No. 4752, U.S.N.M., described by Dr. F. A. Lucas as Stegosaurus 



