EXPLANATIONS OF PLATES. 



[The plates are all from photographs.] 



Plate XXXVIII. 



FiG.i. — Carcharias taunts, lateral view of teeth in upper jaw of a shark about 152 cm. long, from Cape 

 Lookout, N. C. 



Fig. 2. — Carcharias taurus, lateral view of lower jaw, same specimen as fig. i. 



Fig. 3. — Vupecula marina, lateral view of teeth from a specimen about 457 cm. long, from Cape Look- 

 out, N. C. 



Fig. 4. — Cetorkinus maximus, portion of jaw of specimen from Monterey, Cal. U. S. National 

 Museum no. 27024. 



Plate XXXIX. 



Fig. I. — Ginglymosloma cirratum, teeth of lower jaw, from back. Jaws in U. S. National Museum 

 originally from Pensacola, Fla. 



Fig. 2. — Scoliodon terrte-novcB, lateral view of teeth from a female 102 cm. long, from Shackleford 

 Banks, Beaufort, N. C. 



Fig. 3. — Aprionodon isodon, lateral view of a female 50.8 cm. long, in the Beaufort laboratory col- 

 lections. 



Fig. 4. — Carcharhinus milberti, teeth of a female 147.3 cm. long from Woods Hole, Mass. 



Plate XL. 



Fig. I. — Hypoprion brevirostris, teeth of upper jaw of a male 248.9 cm. long, from Beaufort, N. C. 

 Fig. 2. — Hypoprion brevirostris, teeth of lower jaw of same specimen as fig. i. 

 Fig. 3. — Carcharhinus limbatus, lateral view of a female 70 cm. long, from Beaufort, N. C. 

 Fig. 4. — Carcharhinus limbatus, lateral view of same specimen as fig. 3. 



Plate XLI. 



Fig. I . — Carcharhinus acronotus, teeth in upper jaw of a female 134 cm. long, from Shackleford Banks, 

 Beaufort, N. C. 



Fig. 2. ^Carcharhinus acronotus, teeth in lower, jaw of same specimen as fig. i. 



Fig. 3. — Carcharhinus commersonii, teeth in upper jaw of a specimen from Beaufort, N. C. 



Fig. 4. — Carcharhinus commersonii, teeth in lower jaw of same specimen as fig. 3. 



Plate XLII. 



Fig. I. — Galeocerdo arciicus, teeth of upper jaw of a specimen from Loggerhead Key, Fla. U. S. 

 National Museum. Collections. 



Fig. 2. — Galeocerdo arciicus, teeth in lower jaw of same specimen as fig. i. 



Fig. 3. — Galeorhinus Icevis, teeth of a male 75 cm. long, from Cape Lookout, N. C. 



Fig. 4. — Squalus acanthias, teeth of a female 84.5 cm. long, from Beaufort, N. C. 



Plate XLIII. 



Fig. I. — Cestracion zygcena, dorsal view of a male 12/1.5 cm. long, from Beaufort, N. C. 

 Fig. 2. — Cestracion zygcena, teeth of a male 132 cm. long, from Beaufort, N. C. 

 Fig. 3. — Cestracion zygcena, teeth of young example 52.3 cm. long, from Beaufort, N. C. 

 Fig. 4. — Cestracion zygcena, teeth of upper jaw of a female 381 cm. long, from Beaufort, N. C. 

 Fig. 5. — Cestracion zygcena, teeth of lower jaw of same specimen as fig. 4. 



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