278 FIELD CoLuMBIAN MusrtuM—GEo.oecy, VoL. I. 
scarcely be included in the same genus with the larger species just 
described. 
The scapula and coracoid of No. 6668 are firmly coéssified, as is 
true of the two other specimens of this genus which will be noticed. 
Compared with Morosaurus grandis, Marsh, the scapula as a whole is 
a little larger and the neck slightly longer in proportion. The coracoid 
is somewhat larger owing to the ossification of the connecting cartilage. 
The humerus is a little shorter in proportion to the scapula and 
fore-arm and the deltoid crest is more prominent than shown in the 
type. However, the two bones are crushed in different directions, 
which probably accounts for apparent differences. The ulna is stout, 
at the proximal end and deeply concave on the anterior surface to 
receive the radius. It is stronger in the shaft than the latter, but 
tapers so that the distal ends are about equal in size. The radius is 
nearly uniform in the shaft; the proximal end is more rounded and 
but little larger than the distal end. The radius crosses from the 
front to the side of the ulna; its angular surface admits of little or no 
rotary motion. 
Following are a series of measurements of the fore leg of Museum 
specimen No. 6668 compared with measurements made by the writer 
from the type specimen of MW. grandis preserved in the Museum of 
Yale University: 
Type, 
No. 6668. M. grandis. 
M. M. 
Coraco-scapula, total length with curve, . . . . 1.575 mr 
Scapula, total length with curve, . . pom ee LS 1.093 
Scapula, length of upper end from concave border 
ob blade, neues: nF 2 Wen Leh tet Nig Re 
Scapula, greatest breadth of NEAT, ey is ea at eS ae, 635 
Scapula, greatest breadth of upper end,. oy a we god whe 
Scapula, least breadth at po as gs 2) See TOO 
Coracoid, greatest breadth, aah: 2. es 35 
Coracoid, breadth from suture to reno Rocders rues 20) ee 
Humerus, length, ee MGR: So by Vite. Ve CEO .864 
Humerus, rence at proximal hay Ee ein oe OO 381 
Humerus, breadth at:distalend,." 0) 22 3) oe eee 2a .260 
Humerus, breadth of shaft at middle, . . . 135 .127 
Humerus, distal end to inferior margin of deltoid 
crest, RM rnin es We pepe ae oe ae Re Pees) Ii ry cba ee 
Ulna, iensth, Lind fe oP halts 2 Ce Soke ae .628 
Ulna, greatest brea prcalael EHD Fo ends a aed 
Ulna, greatest breadth distal end, Ney ch ed aes 
Radiusplength. 5 2.yiccc svete re Oar eee ee Ot TO 
.Metacarpal I, length, pion te a E Lisl Ak Malena, BO Oy es 
Metacarpaliidéng ths) 0028 ae. aa eA ae 
Metacarpal Vi, deme ting J) ipntel Nec tee eee eee ee 
Ungual Digits length...) gy. verter ee LO 
