60 BULLETIN 73, UNITED STATES NATIONAL MUSEUM. 



that of the Kiska specimen. This may, of course, be a real difference, though such 

 is probably not the case. 



Considering the foregoing data relative to grehnitzkii as a whole, there is not in 

 my opinion sufficient warrant at present for considering this form as a species 

 distinct from cavirostris, and it should be added that no distinguishing characters 

 were given in the original description. 



Genus BERARDIUS Duvemoy. 



Of this genus the National Museum has tluee skulls and three skeletons repre- 

 senting the species bairdii, and a skull representing the species arnuxii. The latter. 

 Cat. No. 21511, U.S.N.M., is without exact locality, but is catalogued as having been 

 obtained in New Zealand. As the species arnuxii has been well described and 

 figured by Flower " and others, no detailed account of this skull is given here. 

 Measurements of it, however, are included with those of B. hairdii in the table on 

 p. 68. 



BERARDIUS BAIRDII Stejneger. 



Berardius bairdii Stejn'Eger, Proc. U. S. Nat. Mus., vol. 6, p. 75, June 22, 1883. 

 Berardius vegx Malm, Bihang K. Svenska Vet. Aka^d. Handl., vol. 8, 1883, No. 4, p. 109.6 



This species was based by Dr. L. Stejneger on a skull obtained by Mr. N. Greb- 

 nitzki in Stare Gavan, on the eastern shore of Bering Island, Commander Group, 

 Bering Sea, in the autumn of 1881. In 1879 a portion of a skull of the same species 

 was found on Bering Island by the Vega expedition, and was made the basis of a 

 new species, B. vegsc, by A. W. Malm, the description of which was published a few 

 months after that of Doctor Stejneger. The National Museum subsequently 

 received another skull from Bering Island, through Mr. N. Grebnitzki, but, so far 

 as I am aware, nothing further was heard of the species until 1903 and 1904, when 

 the National Museum received three nearly complete skeletons, two of them from 

 St. George Island, Pribilof Group, Bering Sea, and one from the coast of California. 

 The material now in the National Museum is as follows: " 



(1) Cat. No. 20992. — Skull and mandible of an immature individual collected 

 by Dr. L. Stejneger in Bering Island. Original number 1520. Catalogued Novem- 

 ber 24, 1883. Type. 



(2) Gat. No. (lacking). — Skull and mandible of an immature individual. Col- 

 lected by Mr. N. Grebnitzki in Bering Island ( ?). Mounted. 



(3) Cat. No. 14211s. — Skull, mandible, and cervical vertebrae of a very young 

 individual. Collected by Dr. L. Stejneger, June 5, 1883, on North Rookery, Bering 



a Trans. Zool. Soc. London, vol. 8, 1871, pp. 203-234, pis. 27-29. 

 bSee Bull. Amer. Geogr. Soc, 1886, No. 4, p. 328. 



c There ig, or was formerly, in the museum of the Alaska Commercial Company in San Francisco a 

 skull of Berardius 3 feet 6 inches long. The locality in which it was obtained is unknown to nie. 



