TERN. 101 



Found frequently on the sea shores of Sodermanland ; called by 

 the Swedes, Skr'anmase. In the Carlsonian Museum is a Variety, 

 with a white bill ; crown of the head mixed black and white ; the 

 region of the ears black ; the back and wings are cinereous ; tips of 

 the prime quills black. This probably is a young bird, but whether 

 of the Caspian or Cayenne Species does not seem quite clear. 



C. — Bill orange ; crown black ; the plumage much as in the last 

 described ; the outer tail feather reaches three inches, or more, beyOnd 

 the adjoining one, but the others are moderately forked ; the outmost' 

 as far as it exceeds the other pure white ; legs red. 



This is found in India, about Lucknow. In the drawings of Lord 

 Monntnorris is a further Variety, with the crown mottled white and 

 ash-colour, and a dusky mark about the ear. 



2— CRESTED TERN. 



Caspian Tern, Phill. Voy. 160. pi. p. 177. Gen. Syn. vi. 351. 1. Var. B. 



LENGTH nineteen or twenty inches. Bill three, stout, pale 

 yellow ; nostrils pervious; the crown of the head black, the feathers 

 longish, forming a kind of pensile crest at the nape ; the rest of the 

 head, neck, and under parts of the body white; back and wings 

 pale cinereous grey ; quills grey, with the ends dusky ; inner webs, 

 half way from the base, white; tail grey, forked, the end half of 

 the feathers white; the shafts of the quills and tail white, the last 

 shortest by an inch; legs black. The supposed female has the 

 crown somewhat mottled with grey, and the wings darker coloured. 

 Inhabits China : we have seen one, greatly resembling, from 

 the Friendly Isles, in the South Seas ; it is also found at Hapaee, one 

 of the Sandwich Islands ; it appears to be not unfrequeut in New- 

 Holland, and there called Gerra-gerra. Is probably allied to the 

 Caspian Tern. 



