404 Annals of the Carnegie Museum. 



Plate XXIV. 



Fig. 40. Anconal aspect of the right humerus of a specimen of Puffinus 

 major; adult; nat. size. (No. 17799, Col. U. S. Nat. Mus.) La Havre Bank, 

 U. S. F. C. Schr. " Grampus." 



Fig. 41. Anconal aspect of the right humerus of a specimen of Puffinus 

 creatopus; adult; nat. size. No. 18773, Coll. U. S. Nat. Mus. (See fig. 42-) 



Fig. 42. Palmar aspect of the left humerus of Puffinus creatopus. From 

 same skeleton that furnished the bone shown in fig. 41 of this plate. 



Fig. 43. Right ulna of Puffinus parvus, subanconal aspect ; nat. size. 

 McGall Coll. 



Fig. 44. Left ulna of Puffinus parvus; inner surface; nat. size. McGall 

 Coll. 



Fig. 45. Left radius of Puffinus parvus; dorsal surface. McGall collection. 



Fig. 46. Left ulna of Puffinus Iherminieri {"P. obscurus"). No. 17724, 

 Coll. U. S. Nat. Mus. ; nat. size ; palmar aspect. 



Fig. 47. Right radius of Puffinus Iherminieri {"P. obscurus"). No. 17724, 

 Coll. U. S. Nat. Mus.; nat. size; dorsal aspect. 



Fig. 48. Right ulna (nat. size) ^strelata vociferans ; subanconal aspect. 



Fig. 49. Right ulna, natural size, Mstrelata vociferans ; subanconal aspect. 



Fig. 50. Right ulna (nat. size) Mstrelata vociferans ; palmar aspect. 



Figs. 4S-50 are all from the collection of the American Museum of Natural 

 History, and show very well the variation in the matter of size of the ulna 

 in this species — a variation due to sex or age and in some instances to both. 



