ERISMATUR1N.E.] 



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I 



GENUS I. THALASSORNIS. 



Ext. Char. Pedes digitis posterioribus lobatis, extends inter-mediis vix aquantilms. 

 Tibia plumosae. Rostrum validum. latum ; lateribus parallellibus ; et ungue magna armatum. 

 Nares parva?, ovales. in medio rostri culminem versus positae. Cauda rotundata, rectricibus 



brevibus et subrigidis mstmcta. Aim breves, remigibus ad apices incurvatis. 



Anat. Char. Ignoti. 



Ext. Char. Feet with the posterior toes lobated, the outer ones scarcely equal to the 

 middle. Thighs feathered. Bill strong, broad ; the sides parallel, and armed with a large nail. 

 Nostrils small, oval, placed in the middle of the bill towards the cuhnen. Tail rounded, furnished 

 with short and slightly rigid feathers. Wings short, with the quills incurved at the apex. 



Anat. Char. Unknown. 



Thalassornis nobis. 



Type. Thalassornis leueonotus. 



Affinity. The above genus appears to form a connecting link between the genus < langula 

 and Biziura, the structure of the tail being nearly that of the former genus, while the bill is thai 

 of the latter. 



