BEAKED WHALES, FAMILY ZIPHIID^ TRUE. 



Dimensions of four skeletons of Ziphius caDiros«m— Continued. 



49 



Measurementa. 



Metacarpals: 



Length of first 



Length of second 



Length of third 



Length of fourth 



Length of fifth 



Phalanges: 



Length of first phalange of first digit . 

 Sternum: 



Total length 



Length of manubrium 



Breadth of manubrium 



Length of fifth segment 



Breadth of filth segment 



Ribs: 



Length of first rib (straight) 



Breadth of first rib at proxunal end. . 



Breadth of first rib at distal end 



Length of fifth rib (straight) 



Length of ninth rib (straight) 



Bamegat 

 City, New 



Jersey. 



20971 

 U.S.N.M. 



female, 



adult. 



a 803 

 259 

 286 



C170 

 133 



405 

 88 

 63 

 785 

 620 



Newport 

 Rhode 

 Island. 

 49.599 



U.S.N.M. 

 male, 

 adult. 



821 

 306 

 333 

 C184 

 168 



410 

 110 

 80 

 770 

 620 



Charleston, 



South 



Carolina. 



21975 



U.S.N.M. 



female, 



young. 



Bering 



Island. 



(Vertebrae) 



young. 



6 550 



6 203 



193 



l>128 



277 

 65 

 40 



545 



1395 

 105 

 128 

 c92 



82 



191 

 46 

 30 



415 



a Without cartilages. 



c Left side. 



b With cartilages. 

 PHALANGEAL FORMULA. 



The formulas for the ossified phalanges m two American ° and tliree Old World 

 specimens are as follows : 



Phalangeal formula of five apedmens of Ziphius cavirostris. 



Locality. 



Newport, Rhode Island 



BarnegatCity, New Jersey 



Villefranche , France ( Haeckel) 



Pisa Museum, Italy (Van Beneden) 



Warrington, New Zealand (Scott and Parker) 



II. 



5 



3(?) 



5 



in. 



IV. 



SUMMARY OF DIFFERENCES IN SKELETONS. 



The chief differences between the Bamegat City and Newport skeletons are in 

 the size and form of the processes of the cervical vertebra, the form of the seventh 

 and eio-hth thoracic vertebra and of the ribs connected with them, the direction of 

 the acromion of the scapula, the shape of the first phalange of the first digit, and 

 of the posterior segments of the sternum. As far as the processes of the cerviails 

 are concerned, these are known to be extreme ly variable in all cet aceans. The 

 a The Buenos Ayres spectaen is not included here, as I am uncertain as to its proper interpretation. 



