Shufeldt: Birds from Bermuda. 349 



In summing up the " knozvn characteristics of the Cahozv," Pro- 

 fessor Verrill came to the conclusion that in their combination the 

 species differed from all known birds. (Pop. Sci. Monthly, Vol. IX, 

 p. 22, Nov., 1901 ; also Ann. and Mag. Nat. Hist., Vol. IX, p. 26, 

 Jan., 1902.) 



As the skins which were in the possession of Prof. Leverett M. 

 Loomis were at hand (see his letter antca), and also the " Cahow " 

 material belonging to the U. S. National Museum which Doctor Lucas 

 had, there were some comparable characters which could be disposed 

 of at this stage of the examination. 



In the latter lot there is to be found the curved, distal extremity of 

 the superior mandible of an adult " Cahow," which is still covered 

 with its horny sheath or mandibular theca ; it is the only beak so 

 covered in all the material representing the subfossil bird bones from 

 Bermuda before me. This is important from the fact that it gives 

 the exact form of the end of the superior mandible as in life. 



On November 3, 1915, at the U. S. National Museum, I compared 

 this sheathed piece of an upper mandible of a " Cahow " with the 

 corresponding part in .-Est r data caribhcca and in Puffinus llierniinieri 

 (Audubon's Shearwater). The examination convinced me of the fact 

 that this subfossil, horn-covered piece of the upper bill came from a 

 species of Petrel (^strclata) rather than from that of a Shearwater 

 (Ptiffinus), as the interval between the independently curved, terminal 



Tristram, Rev. Henry B., Annals and Magazine of Natural History, IX, 

 No. 49, Jan., 1902. 



Jones, J. Matthew, and Goode, George Brown, " Contributions to the Natural 

 History of the Bermudas." Vol. I, Washington, Government Printing Otftcc 

 1884, pp. 274, 276. This is an early and very interesting account; it is 

 Part IV of the aforesaid " Contributions," and entitled " The Birds of Ber- 

 muda." by Captain G. Saville Reid, F. Z. S., etc. Captain Raid believed the 

 " Cahow " and Puffinus obsctiriis (Puffinus Ihenninieri) to be identical. 



Verrill, Addison E., " The Bermuda Islands." An account of their scenery, 

 climate, productions, physiography, natural history and geology, with sketches 

 of their discovery and early history, and the changes in their flora and fauna 

 due to man. With 38 Plates and over 250 cuts in the text. Reprinted from 

 the Trans. Conn. Acad, of Science, Vol. XI, with some changes. Publ. by the 

 author, New Haven, Conn., 1902. pp. 249, 256-267, 449. On pages 313, 44S 

 and 449 of this volume. Professor \'errill gives numerous other works treating 

 of the birds of Bermuda in general, and of the " Cahow " in particular — as 

 those of William Jardine, John L. Hurdis, J. M. Jones, G. Saville Reid, D. 

 Webster Prentiss, Lieut. H. Denison, Witmer Stone, and others. 



