226 



ribs are attached to the sacral vertebrae ; the hsemapophysis of the first articulating with the 

 sternum, while that of the last is attached to the preceding heemapophysis. 



Hunterian. 



1185. The skeleton of the Gannet (Sula bassana). 



The furculum and two phalanges of the left middle toe, and the right femur, show the 

 effects of ossific inflammation. The number of vertebra? between the skull and sacrum is 

 21, the last four of which support ribs with bony appendages, and attached to the sternum 

 by hsemapophyses ; the last three pairs of ribs are attached to the sacral vertebrae. The 

 difference in the vertebral characters from the foregoing specimen is due merely to a greater 

 degree of confluence of the twenty-second vertebra with the sacrum in the present skeleton. 



There are 8 caudal vertebrae. 



Mus. South. 



1186. The skull of the Gannet (Sula bassana). 



The external nostrils are reduced to extremely minute perforations at the extremity of the 

 grooves, answering to those leading to the external nostrils in the Cormorant. 



Presented by Sir Everard Home, Bart., F.E.S. 



1187. The dried head of a Gannet (Sula bassana). Hunterian. 



1188. The sternum, furculum, and scapular arch of a Gannet (Sula bassana), with 

 five pairs of haemapophyses, or sternal ribs. 



The apex of the furculum has coalesced with that of the keel of the sternum, but the line 

 of original separation may be traced. The episternal process is much developed, and sup- 

 ports the chief part of the keel, which subsides at the middle of the proper sternum. This 



bone is entire, with two posterior emarginations. 



Purchased. 



Tribe LONGIPENNAT.E (Wanderers). 

 Family Procellariidee. 



Genus Diomedeea (Albatroses). 

 1189. The skeleton of the Great Albatros (Diomedeea exulans). 



It is remarkable for the great length of the humerus and antibrachial bones. The skull is 

 characterized by the large and deep superorbital fossae, for the lodgment of a peculiar gland, 



