348 Mr. C. W. Andrews on Fossil Remains of 



The upper portion of a left coracoid belonging to the type 

 is shown in PL VIII. fig. 5 ; other fragments ofthe bone also 

 occur in the collection. The acrocoracoid is large and its 

 neck short ; on the inner surface^ beneath the clavicular 

 face^ there is a deep pocket-like depression into which open 

 pneumatic foramina. The clavicular process is short, and 

 there is no subclavicular (supracoracoid) foramen. The bone, 

 so far as known, is closely similar to those of Plectropterus, 

 Chenalopex, and other Geese. 



The proximal end of the typical scapula is figured on 

 PI. VIII. fig. 6, its outline being partly completed from a 

 second, more perfect specimen, of rather larger size. 



The acromium is large and prominent, as also is the coracoid 

 facet. At the base of this latter, the outer surface of the 

 bone is perforated by a pneumatic fossa; this also occurs in 

 Cereopsis, Ansei^anas, and some species of Anser, but is 

 wanting in Sarcidiornis , Chenalopex, and Plectropterus. The 

 blade is broad and stout in proportion to the size of the head 

 of the bone ; unfortunately, even in the more perfect specimen 

 the distal extremity has been broken away. 



The following measurements of the coracoid and scapula 

 may be useful : — 



Coracoid : length from lower border of scapular facet to 

 upper end of bone 31 mm. ; width of glenoidal surface 13 mm. 



Scapula : width of proximal end 23 mm. 



The sternum is represented only by some small fragments. 



Of the ImmerKS only a few fragments remain : of these 

 the most important are the greater portion of a shaft and a 

 distal extremity. Judging from the former, the proportions 

 of the whole bone resembled those of the humerus of Plectro- 

 pterus, being much stouter than the humeri of Sarcidiornis 

 and Chenalopex. The diameter of this shaft near the middle 

 point is 13 mm. The distal extremity seems to have been 

 relatively narrower and most like that of Sarcidiornis, except 

 that the olecranon fossa is very shallow. The greatest width 

 of this specimen is 30 mm. ; it did not belong to the same 

 ndividual as the shaft above mentioned. 



A complete radius closely similar to that of Chenalopex 

 (Bgyptiacus, but relatively a little more slender, is preserved. 



