No. 482] 



OSTEOLOGY OF THE TllSlXARES 



119 



it in Daption, and tliis is the case with /^////////.s• nh.smru.^. The 

 sternum of the former, liowever, is noii-pneinnalic a coiKhtiim 

 not found in Puffinus. 



Forbes in his work presents a careful and soiiK'what h'liuthy 

 description of the Pectoral arch in o;encraI for the T nJiliKin s. 

 and it agrees very closely with my own ol)servati()iis iipdn ihat 



remarkable esi)ecially for the proiniiiciicr ii- jiittiii<r. pa])i]liform 

 ulnar crest, and (■oiisi)i(U(.ii> irianiinlar raihal crest. Its shafr 

 is quite straiu'ht, ami at its distal end, proximal, to the external 



tached to thi.s l)y li<rament is an ossicle of n.me coiisi.lerahle si/c. 



of the T: l)ent to an obtuse an-lc A ratlirr dcrp, wc1I-,I,.(iim.1 

 fossa exists innne<liately above tiie tub.Tch'. uhih- ihr 



shallow. "In the ( )ceaiiili.he the huinefus i> (onspiciH.usly a 

 stouter and shorter bone, with its shaft evidently curved instead 



