356 Annals of the Carnegie Museum. 



to tlie extreme posterior end of the mid-xiphoidal process, gradually 

 diminishing in depth for its entire length. The xiphoidal processes 

 have already been described above. 



On either side, posterior to the costal border, the margin of the 

 bone is very thin and sharp. On the ventral aspect of the body the 

 '■' pectoral line " is very distinct, either one being carried from a mid- 

 point below the coracoidal groove backwards and inwards to a point 

 next to and about at the middle of the keel. 



This extinct species is named for Mr. Edward McGall, in recog- 

 nition of his success in obtaining this valuable collection of fossil 

 bird-bones from Bermuda. 



Puffinus parvus, sp. nov. 



(Plate XXIV, figs. 43-45; Plate XXV, figs. 55, 56; Plate XXVI, figs. 



6"- 74. 7^^ 77- and 79; Plate XXVII, fig. 93, and Plate 



XXVIII, figs. loi, 107, 121, 122, and 123.) 



[Recent Epoch.] 



Among the bones in the collection of the American Museum of 

 Natural History, as well as among those in the McGall collection, I 

 find abundant evidence pointing to the fact of the existence of a 

 small Shearwater, now extinct, but which doubtless existed during 

 the times when the countless numbers of the " Cahow " flourished 

 upon certain of the smaller Bermudan islands. 



In the first-named collection, there are of these bones a cranium 

 (somewhat imperfect), an ulna, a radius, a carpometacarpus, part of 

 a sternum, four ossa innominata, a femur, a tibiotarsus and a tarso- 

 metatarsus; in the latter collection, five perfect humeri, three ulnae, a 

 radius, a carpometacarpus, a proximal joint of index digit, a coracoid, 

 an inferior mandible, an imperfect os furculum, a tarsometatarsus, 

 and an os innominatum of the left side. 



These bones indicate a Shearwater {Puffinus) smaller than Audu- 

 bon's Shearwater (Puffinus Iherminieri) — that is, smaller than any 

 Shearwater in our present Atlantic Ocean avifauna. It was a smaller 

 Puffinus than the one shown in Plate XXIX, fig. 126, of the present 

 paper.^ 



8 Upon comparing a number of the bones of this extinct Shearwater with 

 the corresponding ones in the mounted skeleton from the museum referred 



