CHECK-LIST OF NORTH AMERICAN TISHES. 217 



Genus 26. HYPOPRION Muller & Henle. 



Hypoprion Miiller A: Heule, Plagiostomen, 34, 1838 (macloti). 



55. Hypoprioii brevirostris Poey. 



West Indies, uortli to Charleston, South Carolina. 



Bypoprion brevirostris Poey, Repertorio, ii, 451, tab. 4, 1868, Cuba. 



56. Hypoprion signatus Poey. 



Cuba. 



Hypoprion signatus Poey, Synopsis, 452, 1868, Cuba. 



Genus 27. APRIONODON Gill. 



Aprionodon Gill, Ann. Lye. Nat. Hist. N. Y., vii, 1861,411 (pmictatua ^ isodon) . 



57. Aprionodon isodon (Miiller &. TTenle). 



Atlantic Ocean. 



Carcharias isodon Miiller & Henle, Plagiostomen, 32, 1838, New York. 



Genus 28. SCOLIODON Miiller & Henle. 



Scoliodon Miiller & Henle, Wiegmann's Archiv f. Naturg., i, 398, 1837 ( laticaudus). 



58. Scoliodon longurio (.Jordan &. Gilbert). 



Pacitic Coast of Mexico. 



Carcharias longurio Jordan & Gilbert, Proc. U. S. Nat. Mus. 1882, 106, Mazatlan. 



59. Scoliodon terrae-novae (Richardson). Sharp-nosed Shark; Tiger Shark. 



Cape Cod to Brazil; very common southward along the Atlantic Coast. 

 Squalus (Carcharias) terrce-novw Richardson, Fauna Bor.-Amer., iii, 289, 1836, 

 Newfoundland. 



Family XII. SPHYRNIDiE. The Hammer-headed Sharks. 



Genus 29. SPHYRNA Rafinesque. 



Sjjhyrna Rafinesque, Indice d'lttiol. Siciliana, 60, 1810 (zygcena). 



Subgenus REMCEPS Gill. 



Beniceps Gill, Ann. Lye. Nat. Hist. N. Y., viii, 1861, 412 {tiburo). 



60. Sphyrna tiburo (Linnpeus). Shovel -head Shark; Bonnet-head. 



Atlantic Ocean; abundant on our coast from Long Island southward, ranging 



to China and Mazatlan. 

 Squalus tiburo Linnieus, Syst. Nat., ed. x, 234, 1758, America. 



Subgenus PLATVSQCALCS Swainson. 



Platysqualus Swainson, Class. Anim., ii, 318, 1839 (" tihuro" :=^tude8). 



61. Sphyrna tudes (Cuvier). 



Gulf of California, West Indies, Mediterranean, and Indian Ocean. 

 Zygwna tudes Cuvier, in Valenciennes, M6m. Mus., ix, 225, 1822, Nice; after 

 Pantoujiier of Risso. 



Subgenus SPHYBXA Baflnesque. 



62. Sphyrna zygaena (Linnseus). Hammer-headed Shark. 



From Cape Cod and Point Conception southward. 



Squalus sygcena Linneeus, Syst. Nat., ed. x, 234, 1758, Europe; America. 



Family XIII. ALOPIIDiE. The Thresher Sharks. 



Genus 30. ALOPIAS Rafinesque. 

 J /o2>ia.3 Rafinesque, Caratteri di Alcuni Generi, etc., 12, 1810 {macrurus = vulpes). 



63. Alopias vulpes (Graelin). Thresher; Fox Shark; Swingle-tail; Long-tail Shark. 



Mediterranean and Atlantic; Pacific Coast. 



Squalus vulpes Gmelin, Syst. Nat., i, 1496, 1788, Mediterranean; after Pennant. 



