356 



THE POPULAR SCIENCE MONTHLY. 



trils are spacious, and chambered in their anterior region ; the orbits 

 are of moderate size and elongated along the vertical. The temporal 

 fossa is limited above and below by a bony arch, a disposition which 

 is otherwise found among living lizards only in the Hatteria. The 



Fio. 4. Iguanodon Bernissaktensis. (At the Brussels Royal Museum of Natural History. Re- 

 stored and mounted by M. L. F. Depauw.) 



Head : a, left nostril ; b. left orbit ; c, left temporal fossa. Vertebral column : d, cervical region ; 

 e. dorso-lumbar reL'ion ; /, sacral region: g, caudal region; h % left scapula; i, left coracoid ; 

 k. left humerus ; I, left ulna ; m, left radius ; n, sternum ; o, left ilium ; p, left pubis ; q, left 

 post-pubis ; r, left ischium ; , left femur ; t. left tibia ; V. left fibula ; v, third trochanter. I, IT, 

 III, IV, V, digits; X, diagrammatic transverse section of the body betweeu the fore and hind 

 limbs. 



