438 



Scientific Intelligence. 



3. New Discoveries of Bones of the 

 Iguanodon; by Gideon Algernon 

 Mantell. — Dr. Mantell has recently 

 published a Memoir on the structure of 

 the Jaws and Teeth of the Iguanodon, 

 illustrated by four large plates, giving 

 views of the newly discovered jaw 

 bones and of the teeth ;* — and also a 

 Review of the Organic Remains of the 

 Wealden, in which the more striking 

 peculiarities of these fossil bones are 

 mentioned.* We here give a copy (re- 

 duced one-third lineally) of an inner 

 view of the jaw from the former me- 

 moir. A full abstract of this memoir 

 iven in vol. vi, p. 430, No. 18, for 

 November, 1848. 



explanation. 



a. The coronal germ of the first anterior 

 tooth, in its alveolus. 



b. The crown of a successional tooth in its 

 natural situation. 



c. Portion of the base of a successional tooth. 



The above are visible in consequence of the 

 removal of the inner parapet of the alveolar 

 proe< s. 



d, d, The deep elongated opercidar furrow, 

 originally covered by the spU-niai or opercu- 

 lar bone. 



e. An obtuse tubercle or projection forming 



the anterior termination of the symphysial 

 portion of the jaw. 



/, /, / Denote some of the alveoli or sock- 

 ets of the mature molar teeth. 



m. The coronoid or complementary bone. 



s. The articulating surface forming the sym- 

 physial suture. 



* From the Phil Trans, for 1848. Part IL 

 p. 183-202. 



t Quart. Jour. GeoL Soc, No. 17, Feb. 1, 

 1849, vol. v,p. 37. 



