1920.] Recently puhliiiJied Ornitliohijjical Works. 939 



and were collected by Messrs. E. Heller, G. K. Cherrie^ 

 H. Watkiiis, and I)y Mr. Cliapniau himself. 



The following- are described in the first ))a|)er : — Micro- 

 sit t ace fer rug incus n/inor, S. Chile; Ujmccrthiu dumetoria 

 hallinani, Chile; U. dahhenei, Argentina; Cinclodes fuscus 

 tucuinanus, Arji'entina ; Leptastlienura punctirju/a, Argentina; 

 L. andicola peruvitma, Peru ; Siptortiis iini/jajtibensis, Fern ; 

 /S. puncnsis rufala, Ar;^entina ; Pseudocliloris uropygialis 

 connectens. Pern ; P. olivascens sordida, Argentina ; Atla- 

 pctcs canigeiiis, Peru; Diglossa niystacalis albHinea, Peru; 

 Orcumanes bi)ighami, Peru; Tcmgara cyancicoliis (jularis, 

 Peru; Ainblycercus holosericeus australis, Bolivia. 



In the second paper ; — Micropus peruvianus, Peru ; Gral- 

 luria watkinsi, Peru ; Grallariculn boUviana, Bolivia ; Synal- 

 laxis stictothorax plurce, Peru ; Phacellodomus striaticeps 

 griseipectus, Peru ; Hylocri/ptus (gen. n. Purnariinjie) cryt/iro- 

 cephalus, VervL ; Xenops ruti/us connectens, Bolivia; Xipho- 

 rhynchus triangularis ban<jsi, Bolivia ; Tliripabrotus layardi 

 madcirce, Brazil ; T. ivnrsceiciczi boliviatms, Bolivia ; Mcco- 

 cer cuius subtropicalis, Peru ; Anceretes agraphia, Peru ; 

 Mioncctas striuticullis columbianus, Colombia; Myioborus 

 melanocephalus />o/^'y^fln?^9, Bolivia; Basileuterus luteoviridis 

 svperciliaris, Pern ; Pheuclicus vropygialis termiiuilis. Pern ; 

 Cataiiienia analoidep griscicentrifi, Peru. 



ColUiiges recent papers on Economic Ornithology. 



[Sea-birds: Their reliition to the Fislieriea and AgriculUire. By 

 Walter E. Collinge. ' Nature ' of 8 Apl. 1920.J 



[The food of the Ni;,ditjar. Id., Journ. Ministry Aiiii. .xxvi. pp. 992- 

 995. 1920.] 



[Some remarks on the food of the Vrnvn-Owl {Sfrix Jlammea Linn.). 

 Id., Journ. Wild l^>ird Investigation Soc. i. pp. 9-10. 19]9.] 



In the first of these articles Dr. Collinge gives the general 

 results of his investigation into the economics of fourteen of 

 our commonest sea-birds. He condemns unhesitatingly 

 the Shag and Cormorant, whose food consists entirely of 

 fish and chiefly of food- fishes. The Common Tern is phiced 

 in class ii., largely fish-eaters but most of the fish not tliose 

 species utilized for food. 



