ELASMOBRANCHII. 59 



mingdale 2 (Johnson's pits), upper marl of Shark River 1 (A 

 Shatters pits), Shiloh 16 (E. D'avis), marl of Shark River 1 

 without donor, Manasquan marl 1 mile south of Farmingdale 6, 

 somewhat f rag-mentary ; upper marl at Poplar 1 ; Vincentown 

 Cretaceous 1 ( Dr. Brown) ; upper marl of Vincentown 1 

 (Dick's pit), and 14 without data. 



[The material from the above localities, so far as any refer- 

 ence can be made, apparently came from the Manasquan marl, 

 the Shark River marl and the Shiloh marl, i. c, from the top of 

 the Cretaceous, the Eocene and the Miocene, K.] 



Genus CARCHARODON Muller and Henle. 



Carcharodon (Smith) Muller and Henle, Arch. Naturg., 1838, p. 84. Type 

 Carcharodon vents Agassiz, virtually monotypic. 



Teeth large, fiat, erect, regularly triangular, edges serrated. 

 Spiracles minute or absent. First dorsal moderate, nearly mid- 

 way between pectorals and ventrals. Second dorsal and anal 

 very small. Caudal peduncle rather stout, lobes of lunate fin not 

 very unequal. Pectorals large. Ventrals small. 



Large pelagic fishes found in most all warm seas and reputed 

 the strongest and most voracious of all fishes. The fossils em- 

 braced in this genus represent the remains of species many times 

 larger, and thus far more formidable than those existing, or the 

 so-called "man-eaters." It is possibly the sole survivor of about 

 19 described extinct species, all of which are only known from 

 detached teeth. 



Carcharodon auriculatus (Blainville). 



Squalus sp. Morton, Syn. Org. Rem. Cret. U. S., 1834, p. 16, PI. 12, figs. 3 



and 5. New Jersey. 

 Carcharias canceolatus (Agassiz) Morton, Am. Journ. Sci. Art., XXVIII, 



!835, p. 271 ("name only, based on above and impr. err.). 

 Carcharias lanceolatus ( Agassiz) Morton, Journ. Acad. Nat. Sci. Phila.. 



VIII, 1842, p. 16 (name only, based on above). 



