BEAKED WHALES, FAMILY ZIPHIID.S: TRUE. 



Dimensions of four skeletons of Ziphius caviroslris — -Continued. 



49 



Measurements, 



Metacarpals: 



Length of first 



Length of second 



Length of third 



Length of fourth 



Length of fifth 



Phalanges: 



Length of first phalange of first digit 

 Stemuin: 



Total length 



Length of manubrium 



Breadth of manubrium 



Length of fifth segment 



Breadth of fifth segment 



Ribs: 



Length of first rib (straight) 



Breadth of first rib at proximal end. 



Breadth of first rib at distal end 



Length of fifth rib (straight) 



Length of ninth rib (straight) 



Charleston 



South 



Carolina. 



21975 



U.S.N.M. 



female, 



young. 



<• Without cartilages. 



b With cartilages. 

 PHALANGEAL FORMULA. 



e Left side. 



The formulas for the ossified phalanges in two American ° and three Old World 

 specimens are as follows: 



Phalangeal formula of five specimens of Ziphius caviroslris. 



Locality. 



Newport, Rhode Island 



Bamegat City, New Jersey 



Villefranche, France (Haeckel) 



Pisa Museum, Italy (Van Beneden) 



Warrington, New Zealand (Scott and Parker) 



II. 



6 

 6 

 5 

 3(?) 

 5 



m. 



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 vertebrae, the form of the seventh 

 and eighth thoracic vertebra? and of the ribs coimected 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 cervicals 

 are concerned, these are known to be extremely variable in all cetaceans. The 



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



