Saurocephalus Leanus. 33 



must have been of much larger dimensions than the European, 

 or Manheim species. (G. Soemerrivgi, Dekay.) 



Locality. Monmouth, New Jersey. 



Place in the Geological series. New Jersey secondary. 



Genus Saueocephalus, Harlan. 



S. laiici/ormis, Harlan. 



Journ. Acad. Nat. of Philad. vol. iii. p. 331, pi. xii. 1824. 



This new fossil genus was originally established on the dental 

 bone and teeth, discovered in 1804, by Lewis and Clark, in 

 fheir " Expedition to Colombia River,"' by whom it was pre- 

 sented, on their return, to the American Philosophical Society, 

 in whose cabinet it remained unknown and neglected, imtil 

 about ten years since we published our description and figure 

 in the work as above referred to. 



Place in the Geological series. Secondary limestone .? Mis- 

 souri, (subcretaceous group.) 



This fossil genus has been further confirmed by the sub- 

 sequent discovery by Mr Lea of a distinct species of the same 

 genus, in a " marl pit" of New Jersey, which was imperfectly 

 described by Dr Hays, as the 



Saurocephalus Leanus. 

 Trans, of the Am. Philos. See. new series, vol. iii. p. 471, pi. 19, 1830. 



Locality. In a " marl pit" near Moorestown, New Jersey. 



Place in the Geological series. Atlantic secondary. New 

 Jersey. 



Very soon after the memoir on the last named species was 

 presented to the American Philosophical Society, we took oc- 

 casion to read the following observations before that learned 

 body, which are now offered for the first time for publication. 



Note on a paper entitled " Description of a fragment of a head of a 

 neiv fossil animal, discovered in a marl-pit, near Mooreston, New 

 Jersey." 



This fossil relic, in the possession of Mr Lea, is interesting, 

 not only on account of its geological locality, but also as it 

 serves further to establish a new fossil genus, the Saurocepha- 

 lus, described by the author of these remarks, in the Journal 

 of the Academy of Natural Sciences, Philad. vol. iii part 2d, 



VOL. XVIII. NO. XXXV. J.XNU.VKV 1835. c 



