ALCEDINIDiE.] 



OSTEOLOGIA AVIUM. 



[Halcyonin^:. 



Measurements (continued). 



Tenths. 

 Breadth of posterior margin of sternum 8 

 Breadth of anterior margin of sternum 6 



Depth of keel 3^ 



Length of head 



Ceryle, Bote. 



Americana, Gm. 

 Similar to Alcedo. 



Tenths. 



Breadth of head 



Length of pelvis 13 



Breadth of pelvis 10 



Measurements. 



Tenths. 



Length of humerus . . . . . . 10 



Length of ulna ,13 



Length of metacarpus 5 



Length of femur ...... 6 



Length of tibia . 10 



Length of metatarsus 4 



Length of sternum 10 



Tenths. 



Breadth of posterior margin of sternum 6 

 Breadth of anterior margin of sternum 4 



Depth of keel 2 



Length of head 26 



Breadth of head 7 



Length of pelvis 9 



Breadth of pelvis • . . . . . . . 7-| 



Subfam. 2. Halcyonin^e. 



Halcyon, Sw. 



Capensis, Linn, 



Type of Halcyoninse. 



Cranium similar to Alcedo ; indentation for the reception of the masseter muscles 

 very deep, extending over the occiput ; occipital ridge very prominent. Lacrymal bones 

 longer than in Alcedo, and pointed ; nasal orifices oval. Interarticular bones with a 

 keel projecting on the middle of their upper side. Scapulae suddenly expanded near 

 their extremities and sloped off very abruptly at their tips. 



Sternum with the edge of the keel nearly straight. In other respects the whole 

 skeleton resembles Alcedo. 



Measurements. 



Tenths. 



Length of humerus 20 



Length of ulna 25 



Length of metacarpus 10 



Length of femur 12 



Length of tibia 18 



Length of metatarsus 7 



Length of sternum . ..... 16 



VOL. I. 



Tenths. 

 Breadth of posterior margin of sternum 12 

 Breadth of anterior margin of sternum 9 



Depth of keel 5 



Length of head 46 



Breadth of head 17 



Length of pelvis 16^- 



Breadth of pelvis ...... 14 



53 



