13 



[Anserin*. 



GENUS II. CHLOEPHAGA. 



Ext. Char. Pedes robusti. Digitis posterioribus mediocribus, unguibus incurvatis 

 instructis. Membrana inter digitos anterius concavatis. Tarsi robusti longi. Rostrum robustum. 

 culmine vix arcuatum, ungue magna instructs. Nares lineares in medio rostri positse. Lamella 

 parvse antice obliterate. 



Axat. Char. Trachea bulbo uno latere osseo. 



Ext. Char. Feet robust. Posterior toes moderate, armed with a curved claw, with the 

 Membranes between the toes scolloped out in front. Tarsi large and strong. Bill robust, with 

 the culmen slightly arched, armed with a large nail. Nostrils linear, placed in the middle of the 

 bill. Lamella small, obliterated anteriorly. 



Anat. Char. Trachea with one osseous bulb on the side. 



Ax as. Linn. 



Bernicla. Steph. 



Chloephaga nobis. 



Type. Chloephaga Magellanica. 



Affinities. The above genus Ave have formed on Bernicla Magellanica, which bird in 

 outward form appears to make a link between the genera Bernicla and Cereopsis, and internally 

 as far as regards the trachea, presents an affinity to the Anatincc. 



