235 



1258. The sternum and soapulnr arch of the Black Swan (Cyynn atrattu). 



Prettnlrd by Sir Evtrard Home, Bart., F.R.S. 



1251). 'IV metatarsus of a Swan, longitudinally bisected. Hmtlerian. 



Genus Aiutr (Gcesc). 

 1280. The skeleton of the common Goose {A**er paiuttrit). 



The number of rertebrse between (he ikull and wu-nim is 22, the but terra of which sup- 

 port moreable rib*. The fint of tboe rib* i short and straight ; the second much longer, 

 reaching to, but not articulating with, the utmium ; it iii|i|x>rtji an appendage ; thr third rib 

 articulate* by a hamapopliyU with the Menmni, and both portion* support bony appendage* ; 

 the fire tuceeediug rib* are similarly completed and joined with thr sternum ; the lait frre 

 rib has, also, a bony hmiapophyM*, which dor* not join the sternum, but cupport* a shortrr 

 cormponding element of a cuccrediug rib, which, howerer, i* not further developed. Thr 

 last two rertebra* supporting free rib* are anchylosed with the iliac bones, and form part of 

 the aacnun. There are 1 caudal vertebne. 



Purchated. 



1261. The skeleton of the Egyptian Goose (A**tr eyyptiacd). 



The number of rertebne from the ikull to the tarnim i* 21, to the hut six of which are 

 attached moreable rib*, of which four are joined by lurmapophysrs to the (ternum : three 

 other pain of rib* are attached to the sacrum, of which the first two are joined to the ster- 

 num by their lurmapophyscs ; that of the last u articulated with the hcmapophysis of the 

 preceding rib. 



Mv. Brocket. 



1262. The skeleton of the New Holland Goose (Cercopri atulralu). 



There are two broad, but not rery deep, superorbital glandular depressions, divided by a 

 straight interorbital ridge : the roof of the orbit is cribriform : the postfrontal process is 

 joined by continuous ossification to the lachrymal, forming a complete suborbital inrrrted 

 arch. The mastoid process is small, and bent toward* the parocripital, forming a tympanic 

 aperture behind and distinct from the os tympauicum. The outer trochlea of the metatarsus 

 i* on a lerd with the inner one. There are 23 rertebnc between the skull aud sacrum, the 

 last fire of which support ribs : the fast of these is free and flouting ; the succeeding four 

 are attached by bony hatmapophyse* to the sternum ; the last three rib* are attached to the 

 sacrum, and, with the exception of the but or eighth rib, also to the sternum. Bony 

 appendage* are developed from the first sis pairs of ribs. There are 6 caudal rcrtebne. 



J/M. Gould. 

 2 H 2 



