328 MEMOIRS OF THE CARNEGIE MUSEUM. 
MeraAsurEMENTS (No. 1604). 
Mm 
Length of eleventh right rib. Measured in a straight line................. 572 
Diameter of upper portion including head, estimated....................-- 53 
Greatest diameter of shaft near the middle.............................. 25 
Greatestidiametentolish aftpne aren cl see west etee eater eae ie ener ae eta 29 
The Twelfth Rib. 
The twelfth rib closely resembles the eleventh rib in outline, but is shorter 
and slenderer. The capitulum and tuberculum approach each other closely, the 
neck bearing the capitulum being relatively quite short. 
Measurements (No. 1604). 
Mm 
Length of twelfth right rib. Measured in a straight line.................. 556 
Diameter of upper portion including head......................------=-- 51 
Greatest diametenonshattmeanthemiddleteas seein eereee eee 23 
Greatestidiametentotsshatt meamend pyar eerie tee ei eee cite 27 
The Thirteenth Rab. 
The thirteenth rib is characterized by a fusion of the capitulum with the 
tuberculum in one mass. The capitular surface looks inward toward the centra, 
the tubercular surface looks slightly inward and strongly backward. The rib is 
much shorter than its predecessor. The angle retreats toward the capitulum, and 
is followed distally, as in the preceding ribs, by a flattened external surface. 
MEAsurREMENTS (No. 1604). 
Mm 
Length of thirteenth right rib. Measured in a straight line................ 510 
Diameter of upper portion including head........................20-000- 49 
Greatest diameter of shaft near the middle......................---+++: 25 
Greatestdiameteriof shaft mearendiee pe eee ee nee ee eran 28 
The Fourteenth Rab. 
The fourteenth rib is short, approximately rotund in cross-section throughout 
the shaft until the external third is reached, when it becomes somewhat oval. The 
angle appears as a slight roughened tuberosity situated beyond the tubercular 
articulating face, which looks backward, while the capitular surface looks forward. 
The flattened external surface which occurs just beyond the angle, and is a marked 
feature in the ribs from the ninth to the thirteenth, does not make its appearance 
in this rib. 
