PROC. U.S. NAT. MUS. VOL 



GILBERT— PLATE 8 



Radiographs of chondrocrania of Sphyrna tudes: A, a specimen 390 mm. TL (holotype of 

 S. bigelowi) from Uruguay (USNM 87682); B, a specimen 346 mm. TL (lectotype of 

 S. tudes) from France (MNHN 1049). 



I 



