152 



LONGIPENNES. 



are probably the only birds which drive through the 

 water, they are not the only divers. 



The second group, LONGIPBNNES (long-winged 

 birds), agree well with the name in that part of their 

 organisation to which it applies They are the birds 

 which career over the surface of the ocean, and make 

 the shores lively with the motion of their wings, and 

 clamorous with the sound of their voices. Their food 

 and their manner of obtaining it differ so much, how- 

 ever, that they do not admit of any general description. 



The third group, TOTIPALM*:, or birds with the 

 feet " entirely webbed ;" that is, having the hind toe 

 considerably produced and included in the membra- 

 nous web, as well as the other three toes. These birds 

 are much longer winged than those of the preced- 

 ing group, and they are good swimmers, and some 

 of them at least can dive ; but the peculiar structure of 



