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Intranarial distance from one-seventh to one-sixth of TL; anterior 

 margin of head broadly curved medially, the lateral expansions of the 

 head pointing posteriorly in embryonic individuals and extending 

 nearly perpendicularly from body in larger specimens; distinct median 

 scallop present on anterior margin of head; inner narial groove present 

 and distinct, extending about half of distance from narial opening to 



Figure 5. — Sphyrna hlochii: a, female, 622 mm. TL, from Sandakan, North Borneo (FMNH 

 21836); h, head of adult, 0.2 X natural size (FMNH 21836); c, head of juvenile, 333 mm. 

 TL, from Batavia, Java, 0.6 X natural size (UMMZ 177111) d, dermal denticles (FMNH 

 21836); e, teeth series from left side of upper and lower jaws (FMNH 21836). (Drawings 

 by Dorothea B. Schultz.) 



median scallop; narial depression present; outer posterior corner of 

 lateral expansions of head situated posterior to corner of mouth in 

 specimens of all sizes; narial flap broad, blunt at tip, with the outer 

 edge curving gradually inward; length of snout about one-eighth of 

 head width; greatest transverse distance between corners of mouth 

 about one-seventh of greatest width of head; symphysis of jaws 



