Fig. 





1. 



2, 



2 a. 



3, 



oa. 



4, 



4«. 



5, 



da. 



6, 



6 a. 



PLATE IV. 



Murcenosaurus leedsi, Seeley ; atlas and axis vertebrte from left side : one- 

 third nat. size 



Ditto ; anterior cervical vertebra from right side (2) and from behind (2 a) : 

 one-third nat. size 



Ditto ; middle cervical vertebra from right side (3) and from behind (3 a) : 

 one-third nat. size 



Ditto ; posterior cervical vertebra from right side (4J and from 

 behind (4 a) : one-third nat. size 



Ditto ; anterior dorsal vertebra from right side (5) and from front (5 a) : 

 one-third nat. size 



Ditto; anterior caudal vertebra from behind (6) and from below {6 a): 

 one-third nat. size 



8, 8 a. 



9. 



10. 



Ditto ; left fore paddle from above : one-fifth nat. size 



Ditto ; left ilium from outer (8) and inner (8 a) sides : one-third nat. size. 



Ditto ; left ischium, upper (visceral) surface : one-third nat. size 



Ditto ; right hind paddle from above : one-fifth nat. size 



Page 

 92 



94 



95 

 95 



97 



102 

 111 

 115 

 117 

 117 



All the specimens figured in this Plate are parts of the type specimen, R. 2421. 



acet., acetabular surface. 



at., atlas vertebra. 



ax., axis vertebra. 



a.z., anterior zygapophvses. 



ch., chevron. 

 ch.f., facet for chevron. 



c.r., caudal rib. 

 cr.i., crista ilii. 



/., fibula. 

 fern., femur. 



fib., fibulare. 

 h., humerus. 



il.f., facet for ilium. 



int., intermedium. 



is.f., facet for ischium. 

 n.sj>., neural spine. 

 pu.f., facet for pubis, 

 jj.r., posterior zygapophyses. 



r., ribs (in fig. 7, radius). 

 rad., radiale. 

 )•./., facet for rib. 

 s.f., sacral facet. 

 si/m., symphysiai surface of ischium. 

 t., tibia. 

 tib., tibiale. 

 t.p., trausverse process. 



u., ulna. 

 uln., ulnare. 



