Anatid^e.] 



OSTEOLOGIA AVIUM. 



[FlJLIGULIN^. 



Measurements. 



Tenths. 



Length of humerus 34 



Length of ulna 32§ 



Length of metacarpus 22 



Length of femur ...... 20 



Length of tibia .33 



Length of metatarsus 16 



Length of sternum ...... 35 



Tenths. 



Breadth of posterior margin of sternum 2 2 

 Breadth of anterior margin of sternum 1 8 



Depth of keel 6 



Length of head 36 



Breadth of head 11 J 



Length of pelvis 40 



Breadth of pelvis 17 



Fuligula, Steph. 



Marilla, Linn. 



Similar in form to the foregoing, but with the sternum broader on its posterior 

 margin in proportion to the anterior, and without any xiphisternal process. 



Nyroca, Flem. 



Leucopthalmus, Bechst. 

 Also similar to Oidemia, but with the pelvis broader in proportion to its 

 length, and both the ischiadic and obturator foramina larger ; hinder margin of the 

 sternum without any xiphisternal process. 



Clangula, Flem. 



Glaucion, Linn. 



Cranium very deep in proportion to its length; orbital septum with one foramen. 

 Palatine bones placed horizontally, broadest at the extremities. 



Sternum of moderate size; instead of fissures on the posterior edge, it has two large 

 foramina; xiphisternal process large, point of the keel projecting very much forwards; 

 without any manubrial process. 



Pelvis of moderate size ; ischiadic foramen large ; obturator narrow. 



Metatarsus with the calcineal process very small. 



Measurements. 



Tenths. 



Length of humerus 31 



Length of ulna 26 



Length of metacarpus 18 



Length of femur 19 



Length of tibia 27 



Length of metatarsus 13 



Length of sternum 40 



210 



Tenth?. 



Breadth of posterior margin of sternum 25 

 Breadth of anterior margin of sternum 17 



Depth of keel 7 



Length of head 25 



Breadth of head 7 



Length of pelvis 27 



Breadth of pelvis 19 



