
 
		increasing in depth of colour, and becoming chestnut towards the other end, at which  
 a  few  black  feathers  are  intermixed;  the black feathers of  the head are continued  
 along the back  of  the  neck,  becoming  towards the back  dark  brown, which is the  
 colour of the whole back ;  the  neck,  breast,  and sides under the wings quite to the  
 tail  are  deep  chestnut;  the  belly is  glossy  white,  the  primaries  dark brown,  and  
 the secondaries white. 
 Sterna  Arctica,  Arctic  Tern. 
 The Common Tern of the Polar and Northern Seas, was supposed to be the Sterna  
 Hirundo,  and as such was described by Captain Sabine,  in  his  account  of the  birds  
 of Greenland,  noticing  however the remarkable difference between the specimens he  
 obtained,  and  the  Common  European  Tern,  in  the  length  of the  bills  and legs.  
 M. Temminck,  on  his visit  to England in 1819,  received specimens of the northern  
 Tern, and in the second edition of his Manuel described them as a new species.  The  
 Terns brought from the Polar Seas in the second voyage,  as well as  a  specimen sent  
 home by Captain Franklin, have the same characters ;  it is,  therefore probable, that  
 these alone are natives of the more northern seas, and that the Sterna Hirundo lives  
 only  in  more  temperate  latitudes.  M. Temminck  states  that  the  specimens  he  
 received,  corresponded with those killed in Scotland and on the English shores;  this  
 surely must  be a mistake,  for  the Arctic Terns  have  not,  it  is  believed,  been  ever  
 found  on the  British  coast.  Captain  Sabine,  in the Appendix to  Captain  Parry’s  
 Voyage,  has  described  the  immature  plumage with which  M. Temminck was unacquainted. 
   The Arctic Terns may always be distinguished from the Common Tern by  
 the length of their  tarse ;  which is not more than half an inch in the former, whilst  
 in the latter it is near an inch long;  the  bill  of the Arctic Tern  is  shorter,  and the  
 tail  somewhat  longer;  there  are  also  some  smaller  points  of difference  noted by  
 M. Temminck;  The Sterna Hirundo,  figured  and  described  by Wilson,  is probably  
 the bird to which that name is properly applied,  though  his  account  differs  in  some  
 points from the European bird ;  he has omitted to give the length of the legs and bill  
 of  his Sterna Hirundo, which is necessary to the  identification  of the species, which  
 must remain unsettled until a specimen, or further particulars,  can be obtained from  
 the United States. 
 Sterna  Nigra.  Black  Tern. 
 The  specimen  received  is  in  perfect  summer  plumage ;  the  head,  neck,  and  
 whole under  parts,  except the  abdomen,  are  sooty black;  the  abdomen and  under  
 tail coverts pure white ;  the back, tail, and upper  part  of the wings dark ash-colour ;  
 the  under  parts  of the wings  light  ash-colour;  wings  exceeding the  tail about an  
 inch  in  length;  the  tail  slightly forked.  In winter  the under  parts become white. 
 In the  perfect  breeding  plumage  it  has  hitherto been called Sterna Fissipes ;  in its  
 winter  dress  it  is  the  Sterna  Nigra of Linnæus  and  others ;  and the young  birds,  
 under the supposition of their  being  different,  have been  called Sterna Obscura,  or  
 the  Brown  Tern.  M. Temminck  has  adopted  Nigra  as  the  specific  name,  in  preference  
 to Fissipes.  The Black Tern is not noticed by Wilson. 
 Larus  Argentatus.  Herring  Gull. 
 The  Herring  Gull  has  been  called Larus  Fuscus  by  some  writers,  but  the true  
 application of that name  is to the Lesser Black-backed Gull of Montagu;  The specimens  
 of this  species killed in Greenland and the Arctic Seas,  have,  in almost every  
 instance,  the  primary feathers  of their wings without  the  black  markings  towards  
 their ends, which distinguish these  birds in other  countries ;  the northern birds have  
 nevertheless been considered as the same species.  Captain Sabine, in  his account of  
 the birds seen in his first voyage,  yielded his opinion on this point to the authority of  
 M. Temminck.  The specimen now under consideration, as well as others which have  
 been recèived from Hudson’s Bay, have the primaries marked as commonly described ;  
 so that it seems the singular variations in this changé of colour in the feathers of the  
 wings  does  not  extend  beyond  the  very  cold  regions  of  the  north.  If  they  are  
 varieties,  it  will  be  desirable  to  distinguish  them  by  calling  the  one  the  Silvery  
 Herring Gull,  and the other, the Black-winged Herring Gull. 
 Larus  Tridactylus.  Kittiwake Gull. 
 This species abounds in Hudson’s Bay.  The specimen received  is  of an immature  
 bird.  Kittiwakes have been more generally called Larus Rissa, when in their perfect  
 breeding plumage ;  whilst Larus Tridactylus used only to  be applied to them in their  
 younger state, in which they are known to the English Ornithologist as Tarrock Gulls.  
 The name of the immature bird has, however, superseded the older specific name ;  it  
 is very appropriate,  as distinguishing the particular character of  the species,  that of  
 being destitute of the hind claw. 
 Larus AtriciUa.  Laughing  Gull. 
 This bird is published in the ninth volume of Wilson's Ornithology, under the name  
 of Larus Ridibundus, which name certainly does not belong to it, for his description so  
 well accords with the bird sent home by Captain Franklin, as to leave no doubt that it  
 was made from a specimen similar to that now before us, which cannot be referred to  
 the true Larus Ridibundus.  As there  are differences  between the  authors who have  
 noticed the Larus Atricilla,  a description  of  this species seems necessary.  It is near  
 seventeen inches long to the end of the tail ;  the bill is near an inch and a half long,  
 bright orange-red ;  the fèathers extending  far beyond the junction of  the mandibles,