METEI0EHYNCH17S CULTEIDENS. 197 



crown, with sharp carinae. There are twenty teeth in the premaxilla and maxilla, and 

 seventeen in the mandible. 



K. 3804 (Leeds Coll. 170). Skull, mandible, teeth (PI. XI. figs. 2-4 ; text-fig. 60), atlas and axi> 

 (text-fig. 61 B, C), four other cervicals, sixteen dorsals, two sacrals, and thirty-seven 

 caudals (text-fig. 66), ilium, ischia, pubes, femora and some odd foot-bones. Type 

 specimen. 



In this specimen the posterior part of the skull was embedded in hard matrix, and 

 consequently is iittle crushed, the form of the occipital region being exceptionally well 

 shown ; the mandible also is very well preserved. 



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



Skull (PI. XI. fig. 2) : 



length in mid-dorsal line 73 - 8 



„ from occipital condyle to tip of snout 76-8 



„ from occipital surface to tip of nasals 52-8 



„ of the nasals 25'2 



distance between nasals and premaxilla? 5'8 



least width between orbits 12 - 3 



width between outer angles of prefrontals 25*5 



length of the frontal anterior to temporal fossa .... 14-3 



width between outer angles of quadrates . . . (approx.) 25'4 

 Mandible (PI. XI. fig. 3 ; text-fig. 60) : 



length 80-9 



length of symphysis 34 - 



depth at coronoid angle 10*7 



v ^ b - **■ SSS. K£ 5H tS r 28: &»**.* b^ua. 



1. 2. 8. 4. 

 Length of centrum in. 



mid-ventral line . . 4-2 4 5 55 . . 4-4 4-S 3-0 2-5 2-4 27 

 Width of posterior face 



of centrum ... 3-9 45 42 41 5-0 33 23 2-2 2-9 21 

 Height of posterior face 



of centrum ... 3-8 ?3-9 4-1 4-0 4-2 33 29 2-9 2-9 2-8 

 Height to top of neural 



spine . . . . 99 10-3 7-7 6-2 7-5 7"S 



Tbe width of the body of the atlas (odontoid) is 46, the height 4 - l. Tbe width of 

 the anterior subvertebral wedge-bone is 4'7. 



Ilium : length from antero-superior to postero-inferior border. 8"0 



„ of acetabular border 6-S 



Ischium : length of symphysial border 15 - 9 



„ from articular surface to posterior augle . . 14-8 



