14:2 BULLETIN :JG, UNITED 8TATES N.\TIONA.L MUSUEM. 



McaniircnKiils of Jour ahnlh of (UohivcpJiahtx brachi/ptcnin and oiiv skull of G.scaminoni 



{prohably the type). 



Measureraents. 



Total leuirth 



Lfii^th of tlio bealc 



Width of beak at its base 



Width of beak at its eeiitor 



Width of iiitermaxilhr ;it same point 



Extremity of l)cak ro blowhide 



Extremity of biak to pturvgoid 



Lensith of tooth lino '. 



Width of skull at tlie orbits 



Width of blowhole 



Length of temi>oral fossa 



Depth of tempoial fossa 



Number of teeth 



Dam 



Neck 



Mills. cT 



225«1. 



Cin. 

 06.2 

 33.3 

 28.8 

 23. 5 

 22. 9 

 40.0 

 4'). 2 

 18.3 

 45.0 

 9.0 

 16.3 

 10.2 



G. brachypterus. 



Osprey, Fla. 



22570. 22572. 



Cm. 



69.0 



35.3 



31.7 



26.9 



27.4 



47.7 



47.9 



18.3 



5i). 2 



9.6 



19.0 



12.3 



8-8 



8-8 



G. seam- 

 moui. 



9074. 



Cm. 

 69.0 

 31.0 

 30.8 

 25.2 

 23.6 

 41. K 

 45. 5 

 20 2 

 48.7 

 10.8 



' 14.8 

 9.0 

 8-8 



GLOBICEPHALUS SIEBOLDII Gray. 



Ddpliinm (jlohiceps, Schlegel, Fauua Jupou., Mammalia, 1844 ('?), p. 17, i». 27, figs. 



1-4. 

 GloJ)ioccplialu8 SicholdU, Gray, ZooL Erebus aud Terror, 1846, p. 32. 



I should be incliued to pass over this species as founded upou too 

 young a specimen to be seriously considered, were it not that in Schle- 

 gel's figure of the exterior at least one peculiar character is indicated. 

 This character relates to the shape of the pectoral fin. In otlier spe- 

 cies the pectoral fins come gradually to an acute termination, but in 

 Schlegel's animal they are represented as being fully one-half as broad 

 immediately beliiiul the extremity as across the middle. This gives 

 the fins an entirely different appearance from those of the other species. 

 If the figure is correct, and if the cliaracter proves constant, SchlegePs 

 specimen must be regarded as belonging to a distinct species. Tln^ 

 animal was so young that tlie characters of the skull are not of great 

 importance. The extremity of the vomer has the appearance of being- 

 bifurcated, one-half being applied to tbe wall of either intermaxillary 

 bone. This disposition of parts is found in the species of some genera, 

 but not in other species of Globiccphalus. 



Resting upon so insufficient a basis, the species must be looked upon 

 as of doubtful value, until more specimens fiom the waters of Japan 

 have been acquired and studied. It will very probably prove to be 

 identical with G. scammonl, to which its uniformly black coloration 

 and expanded intermaxilla^, show it to be allied. 



Glohiocephalns avstralis and sibo, Gray. 



Glohioccphalm austraJis is merely a name inserted by Gray in the 

 Supplement to the Catalogue of Seals and Whales (p. 85). It was never 

 described. 



