472 



Recent Ornithological Publications. 



other points of synonymy and relationship, upon which his 

 thorough acquaintance with the subject well entitles him to ex- 

 press his opinions. 



The simplest and most instructive method of giving the results 

 of Mr. Coues's paper will be a comparative Table of the Euro- 

 pean and North American species of the group : — 



North America. 



Pacific coast. 



Thalasseus elegans. 



Sterna hirundo. 



pikii. 



Haliplana fuliginosa. 

 Anous stolidusf . 



Atlantic coast. 



Gelochelidon anglica. 

 Thalasseus caspius*. 

 — — — regius. 



acuflavidus. 



Sterna forsteri. 



hirundo. 



raacroura. 



paradisea. 



antillarum. 



Hydrochelidon fissipes. 

 Haliplana fuliginosa. 

 Anous stolidus. 



Europe. 



Gelochelidon anglica. 

 Thalasseus caspius. 



cantiacus. 



Sterna hirundo. 



macroura. 



paradisea. 



minuta. 



Hydrochelidon fissipes. 



This list is believed by Mr. Coues to contain all the Terns 

 known to inhabit North America. Sterna trudeauii of Audubon, 

 known only from the typical specimen, may be an abnormal 

 state of S. forsteri. Sterna havelli of the same author is believed 

 to be " merely the adult winter plumage of S. forsteri." 



The only ornithological paper in the 'Proceedings^ of the 

 Academy for this year, so far as we have received them, is an 

 additional note by Mr. Coues on the North American jEgiothi. 

 Additional skins of this group of birds, lately received by the 

 Smithsonian Institution from all parts of North America, seem 

 to show that the forms or races of ^. linarius, long recognized in 

 Europe as jE. holbcelli and ^. rufescens, are also present in North 

 America. With respect to the new species of jEgiothus intro- 

 duced in his original article upon this subject, of which we have 

 already given a notice (Ibis, 1862, p. 187), Mr. Coues has had 



* The American bird is larger in size, and, should it be distinct, is pro- 

 posed to be called T. imperator. 



t Mr. Coues proposes the name A. f rater for the Pacific bird, if distinct. 



