THE WHALEBONE WHALES OF THE WESl-ERN NORTH ATLANTIC. 



291 



at Moutei-ey, Cal., and which belongs to one of the specimens described in 1868 

 {26, 226, 227) ; the British Museum contains a skeleton ; and there is a skull in 

 the museum of the California Academy of Sciences. 



The vertebral formula in the British Museum skeleton, according to Beddard, 

 is C. 7, D. 14, L. 14, Ca. 21 = 56. Ball's Monterey specimen No. \ had the fol- 

 lowing: C. 7, D. 13, L. and Ca. 28 plus those concealed in the flukes. 



SKULL. 



The peculiarities of the skull can be best understood from the figures on pi. 47, 

 which represent the Monterey specimen in the National Museum. This same skull 

 was figured by Van Beneden in 1877 ((?, 96), fi-om photographs fui-nished him by 

 the Museum. Most striking are the rugosities of the occipital, the large size of 

 the nasals, the shortness of the nasal portion of the intermaxilhe, and their o-reat 

 depth anteriorly, the overlapping of the orbital process of the frontal by the proxi- 

 mal portion of the maxilla, and the strong tubercle on the postei'ior margin of the 

 former. All these characters are seen equally as well developed in the skulls 

 figured by Malm (67) as in the Monterey specimen. 



These and many other characters stamp it as a very distinct form, approaching 

 closely neither Balcena nor Balcenoptera. 



The following measurements are from the Monterey skull in the National Mu- 

 seum, and the data given by Malm {67, 17-37). I am not positive that I have 

 interpreted all of Malm's measurements correctly. 



BHACHIANECTES OLAVCVS COPE. SKULL. 



Measurement. 



Total length from the tip of jireniaxilla to occipital 



condyle (straight) 



Greatest breadth 



Length of rostrum 



Breadth " " at base 



middle 



across premaxillse at same point 



Length of maxillfe from frontal border 



Greatest breadth across maxillse proximally 



Length of premaxilliE 



" " nasals in median line 



Breadth of nasals at anterior end 



Distance from anterior end of nasals to anterior end 



of supraoccipital 



Length of orbit, point to point (least) 



" " palatine bones .... 



Breadth across anterior and of zygomatic processes 



of squamosals 



Breadth across anterior angles of orbital processes of 



frontals 



Breadth across posterior angles of orbital processes 



of frontals 



' Straight. Around the curves = 866 mm. 





S40 



SJ s 



300 



'55 



rilt: ex|K^^e^l portion. 



