METRIOBITYNCHUS MOEELI. 191 



Skull : distance between nasals and premaxilla? 6-0 



least width between orbits 8 - 9 



width of snout at anterior end of nasals 4 - 9 



distance between outer angles of prefrontals .... 13-0 



length of the frontal anterior to the temporal fossa? . 9 - l 



Mandible : length (approx.) (33-5 



length of symphysis 27-0 



depth at coronoid angle 6 4 



E. 2049 (Leeds Coll. 28). Imperfect skull and mandible, with two dorsal and one sacral 

 vertebra, ilia, ischia, femora, tibiae, fibulae, and bones of. hind foot. In this specimen 

 the left ilium and the upper end of the left femur are deformed by the irregular 

 outgrowths of bone due to disease or accident (see M. super ■ciliosum, R. 2033, p. 184). 

 Some dimensions (in centimetres) of this specimen are : — 



Skull : width between orbits 7 - 4 



length of nasals (approx.) 20-0 



Ilium : length of dorsal border 3- 7 



,, acetabular border 4-7 



Femur: length in straight liue . . . . 22'6 



long diameter of middle of shaft 2-1 



Tibia : length 7'2 



width of proximal end 2-3 



„ distal end l'S 



R. 3900. Antorbital region of one side of rostrum. This specimen is almost completely uncrushed, 

 displaying the relations of the prefrontals, nasals, and lachrymals as they are not shown 

 in any other specimen examined (text-fig. 57). Although from the absence o£ 

 compression, and incompleteness, it is difficult to compare this specimen with those in 

 the usual condition, the relative slenderness of the rostrum, and the form of the 

 sculpture on the prefrontals, make it probable that it belongs to the present species. 

 The dimensions (in centimetres) of this specimen are : — 



Length of nasal 20-0 



Distance between nasals and premaxilhv 9-5 



Length of prefrontal 69 



Width of prefrontal 4 - 9 



Distance of antorbital foramen in front of orbit 3 - 



R. 1668. Skull and mandible of a small individual probably of the present species, though the 

 dorsal surface of the parietal bar between the supratemporal fossas is somewhat wider 

 than in other specimens. The length of the frontal anterior to the temporal fossae is 

 about equal to the interorbital width, as usual in this species ; the frontal sculpture 

 is not sharply defined. 



