Pelicanid^:.] 



OSTEOLOGIA AVIUM. 



[Procellarin^;. 



Measurements (continued). 



Inches. 



Length of sternum 2} 



Breadth of posterior margin of sternum 2^ 



Breadth of anterior margin of sternum 2 



Depth of keel 



ii 



Inches. 



Length of head 4^ 



Breadth of head . ...... 1| 



Length of pelvis 3^ 



Breadth of pelvis 



1 3 



J-io 



Puffin us, Briss. 



Major, Fab. 



Cranium similar to the foregoing. 



Sternum also similar, with the exception of having two broad shallow fissures on 

 each side of the keel, on the posterior margin. 



Scapula expanded at the tips. 



I have also a specimen of P. capensis, P. griseics, and two other unnamed species 

 from the South Seas, all of which are similar. 



Thalassidroma, Vig. 



Oceanica, Kuhl. 



Cranium very much the same in shape as in Procellaria. Palatine bones also 

 similar, but the edges not deflected. Post orbital processes small, projecting slightly 

 upwards. 



Sternum with the posterior margin entire, projecting slightly at the terminus of the 

 keel, in the centre, lateral margins bending much outwards ; a slight manubrial 

 process. 



Pelvis and other bones similar to Procellaria. 



Furculum not anchylosed with the sternum ; tibia very long ; humerus as long as 

 ulna; os pubis turned much outwards. 



Measurements. 



Tenths. 



Length of humerus ..... 9 



Length of ulna 9 



Length of metacarpus .... 7 



Length of femur 6 



Length of tibia 19 



Length of metatarsus 15 



Length of sternum 



Tenths. 



Breadth of posterior margin of sternum 7 

 Breadth of anterior margin of sternum 6 



Depth of keel 3 J 



Length of head ....... 12 



Skeleton, Plate X. L. 



Breadth of head 



Length of pelvis 



Breadth of pelvis 



Illustrations. 



Sternum, pelvis, palatine bones, 

 metatarsi, Plate XXXIX. fig. J. 

 223 





and 



