334 Memoir Sears Foundation for Marine Research 



Zool., No. 35807); also jaws, fins, photographs and measurements of a female about 8 

 feet long caught at the surface from the "Atlantis" in Cochinas Bay, Cuba, on April 5, 

 1939 (Harv. Mus. Comp. Zool., No. 35515). 



Distinctive Characters. Among the ridge-backed members of the genus, with which 

 it falls, floridanus most closely resembles falciformis in the elongate free rear tips of the 



"W^^^^^^^^^^^^^ 



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A'6 



Figure 58. Carcharhinus floridanus, adult female, about eight feet long, from Fort Pierce, Florida (Harv. 

 Mus. Comp. Zool., No. 35807). A Right-hand nostril, about l x. 5 Dermal denticles, about 26 x. 

 C Left-hand teeth, upper and lower, about Y3 natural size. D Fourth upper tooth. E Sixth upper tooth. 

 F Fourth lower tooth. G Eleventh lower tooth. D—G, about 1.3 x. 



Figure 59. Carcharhinus floridanus, pictured in Fig. 58. j1 Anterior part of head from below, about % x. 

 B Second dorsal and anal fins, about Yi natural size. 



