1918.] Recently published Ornithological Works. 73l 



' The Ibis' of April last and republished it with six additional 

 plates of photograpiis prepared by himself to illustrate the 

 structure and morphology of feathers. As the illustrations 

 of feather-structure in text-books are usually drawings and 

 often quite diagrammatic, Mr. Gladstone hopes that his 

 photographs, which have been taken with great skill and 

 reproduced very successfully, will be useful to students and 

 others interested in ornithology. The text is little more 

 than a full explanation of the various photographs. 



Grinnell's recent papers. 



[The subspecies of the Mountain Chickadee. By Joseph Grinnell. 

 Univ. Cal. Publ. Zool. xvii. 1918, pp. 505-516 ; 3 text-fig's.] 



[_Seven new or noteworthy birds from east-central California. By 

 Joseph Grinnell. Condor, xx. 1918, pp. 86-90.] 



[The name of the American Barn-Swallow. Id. ibid. p. 92. J 



The first of these papers contaius a revision of the sub- 

 species of the Mountain-Tit or Ciiickadee of western North 

 America (^Fenthestes gambeli). The typical race is found in 

 the main range of the Rocky Mountains and does not reach 

 California, where it is replaced by three shorter-tailed races — 

 P. g. abbreviatus in the higher mountains of central and 

 northern California, P. g. ingoensis in the mountains of 

 eastern California bordering on Nevada, and P. g. bailey a 

 in the mountains of southern California ; of these three, 

 the first two named are here described as new. 



The second note informs us of the occurrence of seven 

 new or very unusual bird-records in (California, two of which 

 are here described as new subspecies — Sitta carolinensis 

 tenuissima and Ilylocichla guttata poiiouota, both from Inyo 

 county in the eastern central portion of the State. 



Tlie tliird note is a protest against Mr. Oberholser's action 

 in using erythrogastris instead oierytkrogaster as the specific 

 name ol the American Barn-Swallow. Mr. Grinnell points 

 out that tliough Hirundo is undoubtedly feminine m gender, 

 erytkrogaster is a substantive in apposition and is correct 

 grammatically as well as being the form in which the word 

 was written by the original describer. 



