Scientific Notices 425 



with specimens of it, for the purpose of analysis. M. M. Cheva- 

 lier, Payen, andJulia-Fontaoelle communicated some experiments 

 which they had made on fragments taken from the surface of this 

 fossil ; from which it appeared that they contain from 7o ^ - . to 

 yo ' o ' of azotized matter, but no phosphate of lime. 



August 16. — Dr. Lauth read a Memoir On the Lymphatic Ves- 

 sels of Birds. Some further observations by M. Gaillon were 



read, supplementary to his Memoir On the Nutritive Animals of 

 Oysters. 



Art. LIII. Scientific Notices. 



NEW SPECIES OF PROCELLARLiE. 



In the 8th Number of the 3rd Volume of the " Journal of the 

 Academy of Natural Sciences of Philadelphia," an interesting 

 account appears of four species of Petrels, which had until lately 

 been confounded under the title of Procellaria pelagica, Linn, 

 written by Mr. Charles Bonaparte. That gentleman gives de- 

 scriptions of P. pelagica, Linn., P. Leachii, Temm., and P. 

 oceanica Forst, and adds a description of a fourth species which 

 he calls P. Wilsonii, that had been described and figured by 

 the naturalist whose name it bears, under the name of P. pelagica, 

 and referred to as such by European Ornithologists. The descrip- 

 tion of this newly characterized species is as follows : 



P. Wilsonii, Bonaparte. 



Tail nearly even, the wings, when closed, extending a little 

 beyond its tip ; length of the tarsus nearly one inch and a half, 

 (sixteen French lines.) 



Synonymes. 



P. pelagica, Wilson's American Ornithology, Vol. VII. p. 90. 

 pi. 60. fig. 6. And probably the pelagica of other authors, who 

 have written on the subject of American Birds. 



Vol. I. 2 F 



