406 Annals of the Carnegie Museum. 



Plate XXV. 



Fig. 51. Right humerus of Puffinus gavius ; nat. size; palmar aspect. 

 No. 18286, Coll. U. S. Nat. Mus. From the Auckland Museum. F. F. Cheese- 

 man, collector, on Barrier Island. 



Fig. 52. Left humerus of Puffinus gavius, nat. size ; anconal aspect. Xo. 

 18286, Coll. U. S. Nat. Mus. (See fig. 51 of this plate.) 



Fig. 53. Right humerus of Puffinus Iherminieri {"P. obscurus," Xo. 17724. 

 Coll. U. S. Nat. Mus.) ; nat. size ; palmar aspect. C. Mailer, collector, Ber- 

 mudas. 



Fig. 54. Left humerus of Puffinus llienninieri ("P. obscurus," Xo. 17724, 

 Coll. U. S. Nat. Mus.); nat. size; anconal aspect. See previous figure. 



Fig. 55. Right humerus of Puffinus parvus, sp. nov. (extinct). McGal! 

 collection. Bermuda Islands. Nat. size ; palmar aspect. Subfossil. 



Fig. 56. Left humerus of Puffinus parvus, sp. nov. (extinct). ^IcGall col- 

 lection. Bermuda Islands. Nat. size ; anconal aspect. Subfossil. ^lay or 

 may not have belonged to the same individual which furnished the humerus 

 shown in Fig. 55. 



Figs. 57—60. Humeri of the " Cahow " of the Bermudas, ^strelata vocif- 

 erans, sp. nov. (extinct). Collection of the American Museum of Natural 

 History. All natural size. Figs. 57 and 58 palmar aspects ; figs. 59 and 60 

 anconal aspects. These bones show very well the variations in lengths and 

 proportions of the humerus ; and it is not at all likely that any two of them 

 belonged, in life, to the same individual. They doubtless belonged to male 

 and female birds of different ages. 



