BIRDS OF ARGENTINA, PARAGUAY, URUGUAY, AND CHILE 51 



bird was so emaciated that the pectoral muscles were reduced to thin 

 bands overlying the sternum, a condition due apparently to lack of 

 food, as there was no indication of disease. The measurements of 

 this specimen, in millimeters, are as follows : Wing, 227.5 ; tail, 71.5 ; 

 culmen, 35.6; tarsus, 42,6. The feathers of wings and back are 

 somewhat worn, while the rectrices seem to have been renewed re- 

 cently. The specimen is of the type with blackish upper surface 

 (differentiating it from the grayer P. p. yelkouan and P. f. maure- 

 tanicus). A shearwater of this species (subspecific form unknown) 

 has been recorded from Iguape, on the coast of Sao Paulo, Brazil,^*^ 

 but there seems to be no previous note of occurrence for Argentina. 



PUFFINUS CREATOPUS Coues 



Pufflnus creatopus Coues, Proc. Acad. Nat. Sci. Philadelphia, 1864, p. 131. 

 (San Nicholas Island, California.) 



Skulls of this shearwater were preserved from two mummied 

 specimens found on the beach at Antofagasta, Chile, on May 2, 1921. 



PUFFINUS GRAVIS (O'Reilly) 



Procellaria Gravis O'Reilly, Greenland, Adj. Seas, etc., 1818, p. 140, pi. 12, 

 fig. 1. (Cape Farewell and Staten Hook to Newfoundland.) 



On January 23, 1921, 1 found the dried body of a great shearwater 

 on the beach at La Paloma, Department of Rocha, Uruguay, and 

 secured the skull. There seems to be no other record for the occur- 

 rence of the species in Uruguay, though it is known from the Falk- 

 land Islands and Tierra del Fuego north into North Atlantic seas. 



PUFFINUS GRISEUS (Gmelin) 



Procellaria grisea Gmelin, Syst. Nat., vol. 1, pt. 2, 1789, p. 564. (New- 

 Zealand.) 



A number of mummified shearwaters of this species were found 

 on the beach at Antofagasta, Chile, on May 2, 1921, and three skulls 

 were collected. About 9 in the evening on May 5, while the steamer 

 was passing 12 kilometers west of the Balliesta Islands, Peru, sev- 

 eral came on board attracted by the lights, and near the same hour 

 on May 7, wben 16 kilometers west of Lobos Afuera Island, we 

 encountered large numbers. On this last occasion 40 or 50 blun- 

 dered aboard, and several hundred in the water were observed 

 scurrying aside as the ship passed by the lights from the promenade 

 deck. Those that came aboard fell sprawling on deck and then 

 scuttled along, half erect, with rapid awkward steps. The 

 obliquely placed feet, with the comparatively slight flexure of which 

 they were susceptible, made their stride short and stilted. Some 



» Von Ihering, Aves do Brazil. 1907, p. 37. 



