CHECK-LIST OF NORTH AMERICAN FISHES. 219 



Order F. CYCIjOSPONDYLI. The Cyclospondylous Sharks. 



Suborder CYCLOSPONDYLI. 



Family XVIII. SQUALIDiE. The Dogfishes. 



Genus 37. SQUALUS (Artedi) Linnaeus. 



Squalus (Artedi) Linii;tnis, Syst. Nat., ed. x, 233, 1758 (iucludes all sharks). 



71. Squalus acanthias Lina;eus. JJogflsh; Picked Dogfish; Bonedo<j; Skittle-dog. 



North Atlantic on both coasts and about Cuba. 



Squalus acanthias Liunieus, Syst. Nat., ed. X, 233, 1758, coast of Europe. 



72. Squalus sucklii (Girard). California Dogfish 



Aleutian Islands to Santa Barbara. 



Spinax {Acanthias)'siickHl Girard, Proc. Ac. Nat. Sci. Phila. 1854, 196. Fort Steila 

 cooni, Washington. 



Genus 38. CENTROSCYMNUS Socage & Capello. 



Centrosciimnus Bocage & Capello, Proc. Zool. Soc. Lond. 1864, 263 (cteJolepis). 



73. Centroscymnus ccelolepis Bocage &, Capello. 



Coast of Portugal and neighboring parts of the Atlantic ; Gloucester. Mass. 



and Nova Scotia Banks. 

 Centroscymnus caiolepis Bocage & Capello, Proc. Zool. Soc. Loud. 1864, 263 



Portugal. 



Genus 39. ETMOPTESUS Eafinesque. 

 Etmopterus Ratinesque, Caratteri, etc., 14, 1810 (aoaleatus). 



74. Etmopterus pusillus (Lowe). 



Madeira, Cuba, aud Cape Veides. 



Acanthidium puaillnm Lowe, Proc. Zool. Soc. Loud. 1839, 91, Madeira. 



Genus 40. CENTROSCYLLniM Miiller & Henle. 



Centroscyllium Miiller & Henle, Plagiostouien, 191, 1838 {fahricii). 



75. Centroscyllium fabricii (Reinhardt). 



Greenland seas, Gloucester, and the Nova Scotia Banks. 



Spinax fabricii Reinhardt, Dausk. Vid. Selsk. Forh., 1828, in, xvi, Greenland. 



Family XIX. SOMNIOSIDiE. The Scymnoid Sharks. 



Genus 41. SOMNIOSUS LeSueur. 



Somniosus LeSueur, Jour. Ac. Nat. Sci. Phila. 1818, 222 {hrevipinna=mi(ro- 

 cephalus). 



76. Somniosus microcephalus (Bloch). Sleeper Shark; Kurse. 



Arctic seas, south to Cape Cod, Oregon, and P^'rance. 



Squalus microcephalus Bloch & Schneider, Syst. Ichth., 135, 1801, norther* seas. 



Family XX. ECHINORHINIDiE. The Bramble Sharks. 



Genus 42. ECHINOHHINTIS Blainville. 

 Echinorhinus Blainville, Bull. Soc. Philom. 1816, 121 {spinosus). 



77. Echinorhinus spinosus (Gmeliu). 



Atlantic coasts of Europe, America, and Africa. 



Squalus spinosus Gmelin, Syst. Nat., i, 1500, 1788, '"the ocean." 



