Recently published Ornithological Works. 271 



floridanus, and other subspecies from Florida, Carolina, and 

 Dakota, after his own observations. 



'<)? . Bo// hole on Coloration in Mammals and Birds. 



[On Coloration in Mammals and Birds. By J. Lewis Bouhote. Jonrn. 

 Linn. Soc, Zool. xxix. pp. 185 1-7. 



This paper is an abstract of Mr. Bonhote's article on the 

 subject of coloration, and aims at shewing that colour is 

 chiefly due, in the case of mammals and birds, to activity 

 of nutrition and function (vigour), which itself depends on 

 temperature, food, and sexual activity. Instances are taken 

 from the various regions of the world to explain the reasons 

 of dark hues, bright tints, and bleaching. The centres from 

 which '' bleaching " takes place it is proposed to name 

 " poecilorneres." The discussion of seasonal changes and 

 protective coloration is purposely omitted. 



38. Bureau on the Sooty Tern. 



[Note sur la presence accidentelle de la Sterne fuligineuse, Ster/ia 

 fullyiaosa Gmel., sur les Cotes de le Loire-Inferieure. Par le Dr. Louis 

 Bureau. Ext. du Bull. Soc. Sci. Nat. de l'ouest de la France, 2 e ser. iv. 

 pp. 227-256.] 



The author notices and figures a specimen of Sterna fuli- 

 ginosa killed near Pornic on July 24, 1904. He takes the 

 opportunity, moreover, of discussing the various stages of 

 plumage of the bird, its history, distribution, and repro- 

 duction, with full details in all cases. He gives, by way of 

 comparison, the occurrences of other species of Terns from 

 the Tropical Seas and from Europe. 



39. Chapman on the Birds of Alaska. 



[List of the Birds collected in Alaska by the Andrew-J.-Stone-Expe- 

 dition of 1903. By Frank M. Chapman. Bull. Am. Mus. N. II. vol. xx. 

 p. 399. New York, 1904.] 



This is a report on the birds obtained in Alaska by Mr. M. 

 P. Anderson, who accompanied Mr. Stone as collector 

 during his expedition in the summer and autumn of 1903. 

 The series contains 317 birds and 35 sets of eggs. The 



