218 Annals of the Carnegie Museum. 



the usual antero -median lip of bone furnished by the apex of the basi- 

 temporal. This latter is small and triangular, with its postero-basal 

 line elevated in an unusual manner. Either paroccipital is somewhat 

 conspicuously produced as a thickened scroll-like process curling for- 

 wards as an osseous wing to protect the aural entrance. 



The good-sized occipital condyle is thoroughly sessile —hemispherical 

 in form — and unnotched. Subcircular in outline the. foramen magnum 

 looks downwards and backwards, the plane of the occiput looking 

 rather more directly backwards. This last-named area — broadly reni- 

 form in outline — is almost completely surrounded by a well-marked 

 occipital crest or line. On either side below this becomes continuous 

 with the free margins of the paroccipital processes. 



A true "supra-occipital prominence" can hardly be said to exist, 

 and there are no lateral foraminal perforations, such as we find in most 

 species of true Ibises. A narrow, median vertical ridge divides usually 

 the occipital area, but this does not correspond to the eminence com- 

 monly described as the " supra-occipital prominence." 



This Stork possesses a powerful acutely V-shaped mandible the sym- 

 physial portion of which is very extensive — occupying almost the 

 entire anterior moiety. This part is narrow from side to side, moder- 

 ately decurved, rounded below and deeply concaved in the longi- 

 tudinal direction above. The ramal limbs are flat and deep, especially 

 in the region where the small ramal vacuity exists in each. Either 

 articular cup is an extensive concavity, vertically truncated behind, 

 and upon its blunt inturned mesial process exhibiting the usual for- 

 aminal perforation for the admittance of air into this part of the bone. 



When articulated /// situ the osseous mandibles do not come quite 

 in contact for their posterior two-thirds, and this applies also to the 

 superior ramal margin of either side of the lower jaw, opposite the 

 proximal two-thirds of the zygoma. In either case the interval is of 

 but small amount, being less in the latter than it is in the former. 



Of the Trunk-Skeleton of Tantalus. — This is complete in the speci- 

 men at hand with the exception of all the vertebrae of the tail save the 

 first one — the others having been lost. In the spinal column, the 

 atlas ap])ears to be non-pneumatic, but all the remainder of the trunk- 

 skeleton enjoys that condition to a greater or less degree, — the pelvis 

 and the distal extremity of the scapulae perhaps being the least so, 

 while it is quite perfect in the other bones. 



Between the skull and the pelvic sacrum I count 21 vertebrae. All 



