COEYPHODON. 529 



The spine of the scapula is very prominent, and its fi'ee edge is wide, 

 so, that both its anterior and posterior faces are concave. The interior face 

 of the scapuhi is concave or curved backwards. 



Measurements of scapula. 



M. 



„ . ,, .. T , ..,, ( with coracoid 084 



Proximal loneitudmal width < „ , . , .^ „„, 



° (of glenoid cavity 063 



Proximal transverse width 056 



The radius is a robust bone with large extremities, of which the distal 

 is the larger. The carpal articular surface is, however, smaller than the 

 humeral, the greater width being caused by the large external tuberosity. 

 The head is a transverse oval, as in the New Mexican species. The shaft 

 is oval in section, and is flattened in the plane of the distal extremity except 

 close to the head, where it rises a little inwards. 



Measurements of radius. 



Length 220 



_. , „, .(transverse 068 



Diameters of head < ,. , _,„ 



i vertical 043 



Width of carpal articular face 044 



The sacrum includes four vertebrae, and as the last one is broken, the 

 presence of a fifth cannot be asserted. The intervertebral sutures are visi- 

 ble. The centra and neural arches are depressed; the distal ones very flat. 

 The neural spines are represented by a low keel. The transverse processes 

 are expanded, and are thoroughly coossified distally, inclosing large inter- 

 vertebral foramina, the anterior being the largest. 



Measurements of sacrum. 



Length of fragment 165 



Width at first intervertebral foramen 168 



Anteroposterior diameter of intervertebral foramina < . " 



(third 018 



( vertical 03^ 



Diameters of first sacral centrum < ' 



, ( transverse 058 



The femur is but little shorter than that of B. radians, but is more 

 slender in all its parts, notably in the condyles. The fossa ligamenti teris 

 is well developed, and the head is more prominent than the great trochan- 

 ter. The little trochanter has considerable longitudinal extent, and the 

 34 



