26 



Memoir Sears Foundation for Marine Research 



at tip as at base; weakly rounded above as well as below, and about Vs ^s thick as 

 broad; its tip rounded-truncate. 



Rostral teeth 24—32 on either side, often one more tooth on one side than on the 



/UIJUMiiMAliliyjUXLL/UU/ULA 





Figure 4. Pristis pectinatus. A Saw from specimen about 14 feet long, from southern Florida (Harv. Mus. Comp. 

 ZooL, No. 1220). 5 Two saw teeth from same, about 0.6 X- C Saw tooth from same, seen obliquely, about 1.2 X. 

 D Margin of saw of same to show dermal denticles, about 5 X. £ Eye and spiracle of juvenile male, 1,396 mm 

 long, from off Galveston, Texas (Harv. Mus. Comp. Zool., No. 36659), about 0.4X. F Lower surface of head 

 of same, 0.4 x . G Dermal denticles of same from below first dorsal fin, about 28 x . // Dermal denticles from same 

 in lateral and rear views, about 28 x . ^ Right-hand half of upper and lower jaws to show tooth bands, about 

 1.8 X- K Transverse section of upper jaw to show transition from dermal denticles on upper lip (smaller) to 

 teeth (larger), with lateral aspect of latter, about 7 X . i Teeth from central part of upper jaw, with dermal 

 denticles on upper lip, about yx. 



