ELASMOBRANCHII. 

 3 



39 



FlG. 9- — Isurus acuminatus (Morton). 1-2, New Jersey (Abbott; : 3, Deal; 

 4-6, Shark River (Conrad); 7, Long Branch; 8-16, Monmouth Co. (Cle- 

 burne; ; 17, Monmouth Co. (Breed) ; 18-19, Vincentown (Bryan) ; 20, 

 Burlington Co. (Conrad) ; 21-21, Mullica Hill (Abbott) ; (23-24 are Isurus 

 desorii) 25-26, Allowaystown (Yarrow)- 



