1919-] Recently published Ornithological Works. 143 



(p. 468) that the Glaucous Gull {Larus glaucus of the 

 B. O. U. List) must bear the name Larus hyperboreus 

 Gunnerus, and that L. barrovianus Ridgway is only a 

 subspecies of the Glaucous Gull. This is a matter for the 

 committee of the B. O. U. List to investigate. A long list 

 of proposed changes in the A. O. U. Check-list is also given 

 on pp. 200-217, but it must be remembered that these are 

 not to be considered valid until passed by the Check-list 

 committee. 



Mr. F. H. Kennard writes on the ferruginous stains so 

 often noticed in water-fowl, especially in such birds as the 

 Snow-Geese. On chemical analysis it is found to be due, 

 as might be expected, to oxide of iron, and is no doubt 

 acquired by the habit of digging for food among the mud 

 and decaying vegetation of the iron-bearing waters of 

 marshes. 



An ingenious method of extracting fat from birdskins 

 is described by Mr. H. Lloyd. The fluid employed is ethyl 

 ether, and with the apparatus described Mr. Lloyd finds it 

 most successful. 



The Loon or Diver of north-eastern Siberia is distin- 

 guished by its greenish-coloured throat, and Br. J. Dwight, 

 believing it to be hitherto undescribed, names it Gavia 

 viridigularis. He distinguishes G. arctica arctica of 

 northern Europe, G. a. suschkini Sarudny of Turkestan, 

 and G. a. pacifica of arctic North America, all of which 

 have purplish throats. Another species is renamed by 

 Mr. Stone on p. 244, Troglodytes musculus chapmaiii vice 

 T. m. neglectus preoccupied. This name is given in a 

 review of Dr. Chapman's recent volume on the Birds of 

 Colombia. We hope Mr. Stone will forgive us if we point 

 out the inadvisability of hiding any new names in reviews 

 where they are very apt to pass unnoticed by the unwary 

 investigator. 



The Spoon-billed Sandpiper {Eurynorhynchus pygmceus^ 

 is always a rare bird and the eggs and young have only 

 been known since 1910, when they were secured in the 

 north-eastern comer of Siberia by Captain Kleimschmidt 



