308 THE NATURALIST. 



was killed on the sea-beacli at Wells. Tt measured 33 inches from tip of 

 beak to tip of tail : wing from carpal joint I4j inches ; bill 4j inches, the 

 upper mandible projecting -^ of an inch beyond the tip ot the lower. 

 The whole of the upper parts of its plumage are of a blackish hue, feathers 

 margined with grey. It was in pretty good plumage, and exceedingly fat. 

 Immature specimens of Cohjmhus glacialis are not very unusual on the 

 Korfolk coast during the winter. I noticed the occurrence of three indi- 

 viduals last winter season ; two being obtained at Blakeney, near Wells, 

 and the other at Horeton. 



Gulls. I have not seen any rare examples of the Laridce this season, 

 only a few adult birds of Larus mariyius, and several immature specimens 

 of Larus argentatus. 



Leach's or Forktailed Petrel. An adult male of this species was 

 picked up dead on the 25th of November last, in the neighbourhood of 

 East Bradenham. In condition it was extremely poor and had apparently 

 been dead several days. From beak to tail, both included, it measured 

 8 inches ; wing from carpal joint 6| inches, from tip to tip when extended 

 18 inches. Its head, neck, and back of a sooty black ; wing coverts rusty 

 brown ; the tertails tipped with white. The tail is forked (hence the 

 name), the feathers of which are black, the two outer ones extending 

 half an inch beyond the tips of the others ; upper tail coverts white ; breast 

 and belly sooty black ; behind its thighs and extending over the sides of 

 its vent is an elongated patch of white ; vent, sooty black ; beak, black ; 

 irides, dark hazel ; legs, feet, and toes, black ; the former are an inch io. 

 length. 



Norwich f December 31s^, 1864. 



OBSERVATIONS ON THE DIFFERENT METHODS PROPOSED 

 FOR THE CLASSIFICATION OF THE SPECIES OF THE 

 GENUS BOSA, Lin. 



By Mons. Alfred Deseglise. 



(Continued from page 298 J 

 The first section may be easily recognized by its styles. The Galli- 

 cancB are generally small undershrubs, of 50 centim. to 1 metre (19 to 39 in.) 



