^''^me'''"^] Recent Literature. 211 



received considerable attention from authors, notably Mr. Mathews and 

 Mr. Stresemann. As Mr. Oberholser's material was not available to either 

 of these authors his investigations have a peculiar value in checking up their 

 conclusions. 



Eleven races are recognized, all but one of which fortunately are already 

 provided with names. This form from Pata Island, southern Philippines, is 

 described as Thalasseus bergii halodramus (p. 522). Mr. Bang's race 

 boreolis from the Riu Kiu Islands is synonymized with T. b. cristatus. 



While there may be a difference of opinion as to the advisability of raising 

 Thalasseus to full generic rank it is a satisfaction to see this name used for 

 this group instead of for the Caspian Tern as is done in the A. O. U. Check- 

 List, a mistake against which the reviewer has long contended. Mr. 

 Oberholser's statement regarding one form of which he was unable to see 

 specimens is significant. He says, "there is no trouble at all in distinguish- 

 ing it. . . .merely from the measurements given by Mr. Stresemann." 

 Had Mr. Stresemann neglected to give measurements as has been done in 

 some recent diagnoses of new forms, the status of this race could not have 

 been settled in the present monograph! — W. S. 



Riley on a New Hazel Grouse.' — The United States National Museum 

 having recently acquired a series of typical Tetrasles bonasia septentrionalis 

 Mr. Riley finds that specimens from Manchuria formerly referred to that 

 form are quite distinct and he proposes for them the name T. b. amurensis 

 (p. 17), type locality I-mien-po, N. Kirin. — W. S. 



McGregor on a New Prionochilus.^ — This new flower-picker which is 

 here named Prionochilus anthonyi (p. 531) was procured on Polls Mountain, 

 Luzon, in the mossy forest at 2000 ft. elevation. It differs in pattern of 

 coloration from any other Philippine species. A colored plate accompanies 

 Mr. McGregor's paper. — W. S. 



Chapman on New Colombian Birds.' — Dr. Chapman here proposes 

 twenty-five new species and subspecies as a result of his further studies of 

 the collections of the American Museum. As in his previous papers the 

 descriptions are accompanied by extended remarks on allied forms which 

 add materially to our knowledge of the groups treated. The new forms here 

 described belong to the following genera, Crypturus, Tachytriorchis, Herpe- 

 totheres, Aulacorhynchus, Picumnus, Conopophaga, Microbates, Xiphorhyn- 

 chus, Siptornis, Automolus, Manacus, Phyllomyias, Habrura, Microcer cuius, 



1 Description of a New Hazel Grouse from Manchuria. By J. H. Riley. Proc. Biol. 

 Soc. Wash., XXIX, pp. 17-18. January 25, 1916. 



2 Description of a New Species of Proniochilus from the Highlands of Luzon. By 

 Richard C. McGregor. Philippine Jour, of Sci., IX, No. 6, Sec. D. November, 1914. 



' Diagnoses of Apparently New Colombian Birds. IV. By Frank M. Chapman. 

 Bull. Amer. Mus. Nat. Hist., XXXIV, Art. XXIII, pp. 635-662. December 30, 1915. 



