260 TUBINARES. 



Subclass GALLIFORMES. 



The Galliformes are believed to be the only birds which combine 

 the following characters : — 



Young bom completely covered with down or feathers ; maxillo- 

 palatines not united across the middle line; coracoid articulating 

 with the scapula at an angle more acute than 120°; if a deep plantar 

 tendon reach the hallux it proceeds from the jlexor hngns hallucis, 

 and not from the flexor perforans digitorum. 



The Subclass Galliformes contains three orders, two of which are 

 represented in Japan, 



Order TUBINARES. 



The Tubinares differ so little amongst themselves that they cannot 

 be divided into suborders of sufficient importance to claim more than 

 family rank. 



The diagnosis of the Order is therefore the same as that of the 

 Suborder. 



Suborder XXIV. TTJBINABES. 



Hallux absent or reduced to one bone ; other three digits directed 

 forwards and webbed ; spinal feather-tract well defined on neck by 

 lateral bare tracts ; dorsal vertebrae heteroccelous j nasals holorhinal j 

 external nostrils produced into tubes. 



There are three families which can be well defined comprised in 

 the Tubinares, each of which is represented in the Japanese Seas. 



Family DIOMEDEID^. 



The Albatrosses differ from all the other families of Tubinares in 

 having the nasal tubes separated from each other ; they further differ 

 from the Puffinidse in having no basipterygoid processes. 



