50 FreLp CoLuMBIAN MuseumM—GEo Loecy, VoL. II. 
looking upward; and a small one looking forward and a little down- 
ward for the pubis. The anterior border is concave, and the portion 
adjacent to this border is the thickest of the bone. The symphysial 
border is thickened on the anterior third, gradually thinning posteriorly. 
This border is obliquely truncated, as in the pubis, anteriorly; poste- 
riorly the cartilaginous border, moderately thin, is continued around 
the inner angle to the outer one, where it meets the free outer border 
abruptly. The outer border is gently concave in its whole extent, 
and only a little thicker than the inner portion of the bone. It ends 
in airight angle..5(Pip AVE) 
The zum is a small, rod-like bone, moderately expanded at its 
ischial extremity. Of.the two articulating extremities, that for the 
ischium is much larger than the one for the acetabulum. In the 
middle of the bone, a cross-section is roundly oval. The upper 
extremity has a small, flattened, parallelogrammatic surface, which, 
in the articulated pelvis,. looks inward, slightly backward, and 
perhaps a little downward. The bone when articulated was directed 
backward at an angle of about thirty degrees, and inward perhaps a 
little more. There is very little evidence of articulation with the 
sacral ribs. The union must have been weak and slight. 
The pelvis, as a whole, was troughlike, as was the pectoral girdle. 
The two bones meet at a considerable angle, and it is also certain 
that there was a large angle between the ischium and pubis, so that, 
with the ischial symphysis nearly horizontal, the pubes were directed 
at a considerable angle downward. This position, indeed, is necessary, 
since otherwise there would have beena strongly upward turn of the 
abdominal contour immediately behind the coracoids, and the ischia 
and pubes will articulate in this position only in this specimen. 
Front Limeps.—The paddle-bones of the specimen were all com- 
pletely intermingled and displaced, so that none could be referred to 
its proper hmb from the position they were in. 
Apparently nearly all were preserved, though some of them were 
distorted and crushed. The labor of assorting and correctly locating 
these parts was very great, especially the phalanges; indeed, of the 
latter there is little assurance that the final collocation in many cases 
is correct. Aside from the femora and humeri, the only distinction 
that could be made between the bones of the front and hind limbs 
was in the size, always slightly smaller in the hind than in the fore 
limb. By thus assorting into pairs and assigning the smaller pair to 
the hind limb it was certain that the bones of the epipodial and meso- 
vodial regions were correctly placed. The labor was much hghtened 
