Cope.] 1^^ [Feb. 5, 



of them have median tuberosities, which are developed in others into 

 horn-like spines. These form rows on the opposite sides of the middle 

 line, as they are unilaterally symmetrical. 



Ghar. specif. — The dorsal vertebra above referred to has the centrum 

 slightly wider than deep. Its inferior surface is contracted on each side, 

 and is slightly concave on the middle line. The surface is smooth. The 

 diapophysis is robust, subtriangular in section, and it does not project 

 freely beyond tlie centrum. The centrum of a caudal vertebra with 

 chevron facets, is deeper than wide, and has robust diapophyses, which 

 spring principally from the centrum. The outline of the articular face is 

 a hexagon elongate vertically. This is partly due to the broad truncation 

 of the inferior face. Concavity of centrum slight. 



Measurements of Vertebra and Ribs. 



MM. 



{anteroposterior 66 



vertical 64 



transverse 75 



f anteroposterior , 53 



Diameters of caudal \ vertical 59 



V transverse 51 



Vertical diameter of head of rib attached to dorsal, above 



mentioned , 46 



Transverse diameter of capitulum of do 26 



Transverse diameter of shaft of another rib 40 



Thickness of shaft of another rib 15 



The section of the scapula is everywhere lenticular. It is robust, rather 

 short, without much constriction at the base, and but a moderate expan- 

 sion above. A distinct clavicular facet is not preserved. The incurvature 

 of the inferior surface is most abrupt anteriorlj% the angle there amounting 

 almost to a tuberosity. 



Measurements of Scapula. 



MM. 



Length on external face from superior border to line of supe- 

 rior edge of glenoid cavity 141 



_. ( anteroposterior ^... 60 



Diameters at narrowest part i . oo 



' ( transverse 32 



.^. , . , f vertical 52 



Diameters glenoid cavity i ^ ^n 



" *^ ( transverse 40 



* 



The dermal bones are subquadrate in form, and have sutures on two 

 opposite sides and thin edges on the other opposite sides. The inferior 

 surface is more or less concave from one sutural border to the other. They 

 are all coarsely pitted, but the pits are reduced in size towards the edges in 

 some of the i)lates. In many of the plates there is a prominent obtusely 

 conic tuberosity placed unsymiuetrically near the centre or edge of the 



