ARDEIDiE.] OSTEOLOGIA AVIUM. [PhJENICOPTERINJE. 



inch slightly deflexed, broad, and flattened forward ; interarticular bones broad at 

 their junction with the palatine bones, gradually narrowed backwards; posterior 

 portion of the inferior" maxillary bone much bent downwards, truncate, but with a 

 slight hollow in the middle behind the condyles ; anterior portion flattened. 



Sternum similar in shape to Ardea, but with two shallow fissures on each side of the 

 keel, the inner ones largest; manubrial process wanting; anterior edge of the keel 

 slightly scolloped out, inferior edge much arched. 



Furculum widely expanded, the rami meeting in a wide curve, and having no pro- 

 cess at their junction. 



Scapula slightly arched, sloped off towards the hinder end. 



Wing-bones long, ulna much longer than the humerus. 



Leg-bones with metatarsus long ; calx small. 



Pelvis similar to Ardea. 



Measurements. 



Tenths. 



Length of humerus . . . . . 58 



Length of ulna 68 



Length of metacarpus . .' . . 30 



Length of femur ...... 32 



Length of tibia 75 



Length of metatarsus o5 



Length of sternum 35 



Tenths. 

 Breadth of posterior margin of sternum 18 

 Breadth of anterior margin of sternum 20 



Depth of keel 12 



Length of head ....... 96 



Breadth of head ...... 13 



Length of pelvis ...... 52 



Breadth of pelvis 21 



Illustrations. 

 Pelvis, palatine bones, sternum, and metatarsus, Plate XXX. fig. 2. 



Ph^enicopterus, Linn. 



Euber, Linn. 



Cranium. Occipital ridge slightly marked, protuberance very large; foramen 

 magnum very large ; space above, between the orbits, very narrow, a ridge down the 

 centre, which is bifurcate at the base of the nasal bones ; ethmoid bones visible through 

 the orbits ; orbital septum with a large anterior foramen, and two small ones behind ; 

 nostrils large ; upper maxillaries thin, much curved downwards ; a ridge extends along 

 the roof of the mouth from the palatine bones to the tip of the bill. Palatine bones 

 with the edges deflexed, a small spine on the point of the outer angles, the inner 

 deflexed edge carried backwards to the interarticular bones, and truncate at the ends ; 

 interarticular bones broad at their junction with the palatine bones, and narrowed 

 backwards ; inferior maxillary bone much prolonged backward beyond the condyles, 

 curved upwards, very broad, and turned downwards towards the anterior end, the 

 upper edges turned much inwards, very vascular. 



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