624t Recentli/ published Ornithological Works. [Ibis, 



Fuertes on tropical bird-song. 



[Impressions of the voices of trojiical Birds. By Louis Agassiz 

 Fuertes. Smithsonian Report for 1915, publ. 1916, pp. 299-323; 

 16 pis.] 



The well-known American bird-artist, Mr. Faertes, has 

 had niany opportunities of listening to the songs of the birds 

 of the Central and South American forests and pasture- 

 lands, and in a series of articles, first published in ' Bii'd- 

 Lore' and now reprinted in the Smithsonian Report, he 

 gives us some of his experiences. 



The songs and notes of South American birds are very 

 little known, and Mr. Fuertes adds a good deal to our know- 

 ledge and calls up a wonderful picture of their variety and 

 abundance. Often in the forest they are most difficult to 

 locate and identify. 



The papers are illustrated by reproductions, black and 

 white, of some of the artistic drawings of tropical birds 

 for which the author is so justly famed. 



Howell on the Birds of Californian Islands. 



[Birds of the Islands off the coast of southern California. By Alfred 

 Brazier Howell. Pacific Coast Avifauna of the Cooper Ornithological 

 Club, no. 12, pp. 1-127. Hollywood, Cal., 1917. 8vo.] 



Along the coast of southern California and at a distance 

 of from twenty to sixty miles from the mainland are a series 

 of small islands, the best known of which are Santa Cruz, 

 Santa Catalina, off which is caught the famous giant Tuna 

 or Tunny, and San Clemente. 



Though separated so short a distance from the mainland, 

 a good many of the smaller passerine birds have become 

 sufficiently differentiated to entitle them to subspecific rank, 

 while in a good many other instances subspecific rank has 

 been awarded without justification. 



In the present paper Mr. Howell gives a complete and 

 carefully revised list of all the birds which have been known 

 to occur on the island, and discusses at length those forms, 

 nineteen in number, which have been considered worthy 

 of subspecific distinction. As a rule the differentiation is 



