G08 THE PUERCO FAUNA. 



anterior dorsal with robust and flattened diapophysis is longer than wide, 

 and equally moderately concave at both extremities, which are subround. 

 The neural spine and z3'g-apophyses are well developed. There are con- 

 siderable sjDaces for the attachment of a chevron bone, which are continu- 

 ous with the rim of the articular face of the centrum. The inferior surface 

 is concave on each side of a medium median surface, wliich is concave 

 ant'eroposteriorly. A more elongate caudal has two diapophyses on each 

 side separated liy a sinus, tlie anterior the smaller. The middle line both 

 above and below is angulate medially and flattened at the extremities. 

 Anteriorly above there is a small tuberosity directed upwards and forwards 

 on each side, the remains of the neurapophyses. 



Measurements of vertebrw. 



M. 



( auterposterior 014 



Diameters of C. v or vi-? transverse in front 017 



( vertical iu front Oil 



i auteropostirior 012(> 



Diameters C. vi or vii< vertical in front 0113 



( transverse in front 017 



( anteroposterior ,017 



Diameters of an anterior dorsal/ vertical in front 013 



' transverse in front 0155 



I anteroposterior 019 



Diameters of a posterior dorsals vertical iu front 0l5iS 



( transverse in front 0175 



/ anteroposterior 02'2 



Diameters of a more posterior dorsal-? vertical in front 014 



( transverse in fnmt 022.5 



( anteroposterior 026 



Diameters of a lnml)ar< vertical iu front 01'25 



( transverse in front 022 



I autero])osterior 0225 



Diameters of an anterior caudal < vertical in front 0147 



( transverse in front 017 



anteroposterior 024 



Diameters of distal caudal^ vertical iu front 013 



transverse iu front 0125 



Zygapophj'ses of four vertebrae are preserved. They are flat except 

 in one case they are a little and in another more convex. They are not 

 subcylindric as in Mioclcenus, Mesonyx, &c. 



A supposed inanuhriwn sterni is represented by the anterior T-shaped 

 portion. It is broadly truncate in front, and the superior straight trans- 

 verse edge is I'ecurved. The body of the bone which extends posteriorly 



