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PROCEEDINGS OF THE NATIONAL MUSEUM 



b 



^^f-^^^B 



Figure 9. — Sphyrna zygaena: a, head of specimen illustrated in figure 8 (MCZ 1159), 

 ventral view, about 0.45 X natural size; b, second dorsal and anal fins; c, dermal denticles, 

 about 45 X; ^, fourth upper tooth; e, fifth lower tooth, {d-e, about 9 X.) (From 

 Bigelow and Schroeder, 1948, p. 438.) 



