288 Recently published Ornithological Works. 



Remarks on the skull of Rhynchops follow^ and a useful com- 

 parison of the skull of this very peculiar form with the 

 cranium of the Laridse. The author concludes with ohser- 

 vations on the affinities of the Divers, Auks^ and Gulls. The 

 Auks (Alcse) he proposes to divide into four families — Fra- 

 terculidse^ Phaleridae, Alcidse, and AUidse. 



55. Smith on the Disappearance of Spiza americana. 



[On the Disappearance of the Dick Cissel {Sjnza americana) from the 

 District of Columbia. By Hugh M. Smith. Proc. U.S. Nat. Mus. xiii. 

 p. 171.] 



The "Dick Cissel ''•' of the Americans {Spiza americana), 

 formerly a regular summer visitor to the District of Columbia, 

 appears to have been exterminated there. No specimens of 

 this species have been obtained for thirty years, the last pair 

 registered in the U.S. National Museum having been pro- 

 cured in May 1860. It has, however, been occasionally 

 observed since that period, the last specimen noted having 

 been seen in May 1887. It formerly nested regularly every 

 year within the Smithsonian grounds. 



56. Stevenson and Southwell's 'Birds of Norfolk.' 



[The Birds of Norfolk, with Remarks on their Habits, Migration, and 

 Local Distribution. By Henry Stevenson, F.L.S., continued by Thomas 

 Southwell, F.Z.S. Vol. III. 8vo. London : 1890.] 



The issue of this third volume completes a piece of good 

 work, commenced by the late Henry Stevenson, and left 

 unfinished since 1877, in consequence of his failing health. 

 Mr. Southwell makes unnecessary apologies in his preface for 

 undertaking the task, which he seems to have performed in 

 a very satisfactory manner. Norfolk may now claim to have 

 one of the best of the county histories of British Birds. The 

 appendices to the present volume bring up our knowledge of 

 the species recorded in the first two volumes to the present 

 date. 



57. Stone on Birds collected in Yucatan and S. Mexico. 



[On Birds collected in Yucatan and Southern Mexico. By Witmer 

 Stone. Proc. Acad. Nat. Sci. Philad. 1890, p. 201.] 



