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THE AMERICAN NATURALIST [Vol. XLI 



Cope essentially agrees with Stejneger as given above, with the 

 exception that the Siiperfamilies of the latter are equal to the 

 families of the former. Thus Cope makes the Ce('()morj)ha' 

 contain the families Colymbidjv, lleliornitliidir, Alcida-, Laridie, 

 and Procellariidte.* 



The writer of the present memoir added his own .snichcs to tlie 

 literature of this subject in a paper published in ISSl), which ap- 

 peared in the Proceedings of the United States National jVluseum, 

 it being, in its aim, more descriptive of material then in the col- 

 lections of that institution, rather than an atteni])t to classify the 

 Tubinares. In that \)i\pvr the skeleton of Orcauodroma jurcaia 

 is fully described and figured, also the skeletons of Fuhnarus 

 r/Iaciaiis an<l F. nnh/rrsll, \ru ligures being .levoted to the bones 

 of the latter .p(>( ie^. 



Ocranodronia furrafa and Fuhnarus nuhjrrsii diiVer," and this 

 is foUovvcl by some notes on tlu- osteol.>gy of Vuj]iuus n irosfri. 

 and other mat(M-ial. Finally, a very (•omi)let(> acconnt is u'iven 

 of the skeleton of D/DiiKdcd allxilnis, it beinu- ilhistratcMl bv twebc 



