266 Letters, Extracts, Notices, fyc. 



the difference between it and D. culminata pointed out, there 

 would have been no difficulty in the matter. D. bulleri is 

 certainly congeneric with D. salvini. Neither of them is 

 such a typical Thalassogeron as D. culminata or D. chloro- 

 rhyncha, but they cannot be separated generically. 



It is Diomedea bulleri which breeds on the Snares, not 

 D. culminata. D. chlororhyncha and D. culminata are both 

 found occasionally in our seas, but I do not know that they 

 breed here. Dr. Filhol says that D. chlororhyncha breeds at 

 Campbell Island ; but he probably did not distinguish the 

 species accurately. I saw none when I was there in January 

 1901 — only D. melanophrys, which was extremely abundant, 

 and a few D. bulleri or D. culminata. 



Yours &c, 



F. W. Hutton. 



Christchurch, Dec. 1st, 1902. 



Sirs, — In discussing the respective claims to priority of the 

 names Chlorochrysa hedwiga Berl. &Stolzm. and Chlorochrysa 

 fulgentissima Chapm., Graf v. Berlepsch raises an important 

 point in regard to what constitutes effective publication, 

 which, so far as the medium in question is concerned, can, I 

 think, be satisfactorily answered. This, the ' Bulletin' of 

 the American Museum of Natural History, is not, as Graf v. 

 Berlepsch terms it, a " periodical," but each annual volume 

 is composed of a series of papers published at irregular 

 intervals. 



As stated in the ' Bulletin/ 350 separate copies of each 

 paper are printed, ' ' of which 100 are for the authors and 

 250 copies for the Library exchange list and for sale." 

 These copies may be purchased from the Museum, or 

 through its official agents in New York, London, Paris, and 

 Berlin. Subscribers to the ' Bulletin/ or those who receive 

 it in exchange, may have the papers it contains sent to them 

 as issued, or as a bound volume at the end of the year, as 

 they elect. 



In addition to the copies of each paper distributed and 

 placed on sale by the Museum, the author distributes a 



