ARDEIDiE.] OSTEOLOGIA AVIUM. [Ardeinje, 



Cranium similar to Ciconia in every respect except the much larger sternum. 



Pelvis and other bones also similar. 



I have also the head of Leptophilus nudifrous, which is similar to the above. 



Measurements. 



Inch. 



Length of humerus 12 



Length of ulna ........ 17 



Length of metacarpus 6 J 



Length of femur ...... 5J 



Length of tibia 1 5| 



Length of metatarsus . . . . . llf 



Length of sternum . . . . . 5f 



Inch. 



Breadth of posterior margin of sternum 3 



Breadth of anterior margin of sternum 4 J 



Depth of keel 1J 



Length of head 16 



Breadth of head 3 j 



Length of pelvis 6f 



Breadth of pelvis 3 J 



Illustrations. 



Skeleton, Plate I. K. J Palatine bones, sternum, pelvis, and meta- 



I tarsi, Plate XXX." 'fig. 1. 



MvcTERii, Linn. 



Senegalensis, Shaw. 

 I have only the cranium of this bird, which has the indentation at the base of the 

 nasal bones much shallower than in the foregoing, 



Eurypyga, Bliger. 



Helias, Pall. 



Cranium with a slight depression above, between the orbits, rather elongated, inde- 

 pendent of the bill ; orbital septum nearly obliterated. Palatine bones truncate at the 

 hinder extremities, broad, a very small portion of the inner edge turned downwards, 

 and the whole of the outer expanded part rather long, ending in a narrow strip of 

 bone ; occipital crest and protuberance well defined ; the impression of the masseter 

 also well marked ; inferior maxillary bone truncate at the hinder extremity, the end 

 of the ethmoid bone just visible through the orbits. 



Sternum long, slightly narrowed just behind the ribs ; a deep fissure on each side of 

 the keel, and another very small one inside of it, nearer the keel, the splint bounding 

 the external one reaching as far as the posterior margin of the sternum, which is 

 nearly square. Manubrial process small, and pointed ; keel not deep, slightly arched 

 below, and scolloped out on the anterior edge. 



Pelvis similar to JRhi/ncheea. 



Lea-bones. Metatarsus with a rudimentary calx, and furnished with a hind toe, 

 194 



