Recently published Ornithological Works. 563 



perhaps a signiticant i'act that among the Mammalia the Bat 

 possesses the most weighty heart — 127 : 1000 body-weight. 

 But, curiously enough, the most powerful Hawks have for the 

 most part a light heart. 



91. Py craft on the Wing o/ Archseopteryx. 



[Wing of Archa'opteryx. By W. P. Pycraft. Journ. Oxford Univ. 

 Jun. Scient. Club, 1894, p. 172.] 



Mr. Pycraft appears to have given a very instructive 

 address on the wing of Archceopteryx and the vexata quaestio 

 of its correct interpretation to the meeting of the Oxford 

 University Junior Scientific Club in January last. Dr. 

 Hurst's novel views as to this ancient bird having possessed 

 two extra digits (c/. above, p. 142) are adversely commented 

 upon. 



92. Ridgway on Birds from Alaska. 



[Catalogue of a Collection of Birds made in Alaska by Mr. C. H. 

 Townsend during the Cruise of the U.S. Fish Commission Steamer ' Alba- 

 tross,' in the Summer and Autumn of 1888. By Robert Ridgway. 

 Proc. U.S. Nat. Mus. xvi. p. G6.3.] 



Mr. Ridgway catalogues the birds collected in Alaska 

 during the cruise of the 'Albatross^ in 1888. They are 

 referred to 35 species. 



93. Ridgway on a new Geothlypis. 



[Description of a new Geothlyjns from Brownsville, Texas. By Robert 

 Ridgway. Proc. U.S. Nat. Mus. xvi. p. 691.] 



Mr. Ridgway bases a new subspecies — Geothlypis polio- 

 cephala ralphi — upon specimens collected by Dr. W. L. Ralph 

 at Brownsville, Texas, in April and May 1893. 



94. Salvadori on new Birds from New Guinea. 



[Caratteri di cinque Specie Nuove di Uccelli della Nuova Guinea 

 Orientale-Meridionale raccolti da L. Loi'ia. Per Tommaso Salvadori. 

 Ann. Mus. Stor. Nat. Geneva, ser. 2, xiv. p. 150.] 



In a collection of 700 skins from S.E. New Guinea, sent 

 to the Museo Civico of Genoa by Dr. L. Loria, C'ount Salva- 



