SHARKS AND RAYS OF BEAUFORT, NORTH CAROLINA. 



259 



Color of upper surface of body and fins smoke gray, ventral surface massicot yellow, dusted with 

 black and gray. 



This species appears to be rare in the Beaufort region. Specimens are occasionally taken in the 

 bight of Cape Lookout. On May 6, 1914, two examples 62.2 and 65.4 cm. in length were taken in 

 Newport River. In the Beaufort region it has been confused with C. commersonii (see description of 

 that species). It is quite generally confused with C. obscurus in regions where both occur; in fact, 

 examples from northern waters. New Jersey and New England, identified as C. obscurus, which the 

 writer has examined, have, almost without exception, proved to be C. milberti. 



13. Carcharhinus acronotus (Poey). 



Carcharhinus acronotus, Gudger, 1913a, p. 2; Raddiffe, 1913. p. 396; Coles, 1914, p. 90. 



Teeth. — Teeth in — — rows; upper teeth broad, oblique, triangular; with a distinct notch on the 

 23-25 

 posterior margin; cusps broad, serrate, inclined toward angles of mouth, anterior margin without dis- 

 tinct basal shoulder, posterior margin with a distinct, coarsely serrated basal shoulder below notch; 



Fio. 



-Denticks, Carcharhinus acronotus, about 60 cm. long, from Cape 

 Lookout, N. C. 



one or two rows of small teeth at symphysis, second and third rows on either side slightly larger, gradu- 

 ated; lower teeth smaller than the upper, erect; cusps short, narrow, pointed, very finely serrate, 

 resting on a low, broad base; a median row of minute teeth at symphysis. 



Denticles.— Th^ dermal denticles are large, leaflike, closely imbricated, five-keeled; keels low, 

 narrow, parallel, distinct, interspaces not deeply channeled; apical margin in denticles not badly 

 worn, with five small, graduated lobes, corresponding to the keels, median lobe longest; pedicel short, 

 heavy, resting on a large rhomboidal basal plate. 



Measurements Taken from a Female 134 Cm. (523.^ Inches) Long, Caught on a Hook Baited 

 WITH Mullet, in the Surf on Shackleford Banks, Aug. 9, igi2. 



Tip of snout to — cm. 



Anterior margin of eye 11. o 



First gill slit 25-0 



Front oi mouth 10. o 



Base of pectoral 31.5 



Origin of ventrals 69. o 



Origin of dorsal^ 43.0 



Origin of first dorsal to origin of second dorsal 42. o 



Length of anterior margin of [>ectoral 20. 5 



Distance from base of ventrals to anal 17.0 



Length of caudal 32. s 



Length of subcaudal lobe 14. s 



