[5] catalogue of the fishes of north america. 



Order E.— PROARTHRI. 

 Family VI.— CESTEACIID^. (14) 



9.— CESTRACION' Cuvier. (31) 

 $ Gyropleurodu8 Gill. 



15. Cestracion francisci Girard. C. (41) 



Order F.— SQUALL 

 Family VII.— SCYMNID^. (4) 



10— ECHINORHINUS Blainville. (8) 



16. EchinorhiuuB spiuosua Gnieliu. Ace. Eu. (13) 



11.— SOMNIOSUS Lo Sueur. (9) 



17. Somuiosus microcephalus Bloch. A. G. Eu. (14) 



Family VIIL— SPINACID^. (6) 



12.— CENTROSCYLLIUM Muller & Henle. (10) 



18. Centroscyllium fabricii Reinhardt. G. (15) 



13.— SQUALUS (Artedi) LinnsBOS. (11) 



19. SqualuB acanthias Linnaeus. C. A. G. N. Eu. (16) 



14.— CENTROSCYMNUS Socage & CapeUo. (12) 



20. Centroscymnus coelolepis Bocage & CapeUo. B. Eu. (17) 



Family IX.— SCYLLIID^. (6) 



15.— SCYLLIORHINUS Blainville. (136.) 



§ Catulus Smith. (136.) 



21. Scylliorhinus ventriosus Garman. C. (186.) 



22. Scylliorhinus retifer Garman. B. (18c.) 



1 Cestracion Cuvier (Rfegne Animal, type Cestracion philippi Bloch and Schneider) 

 should perhaps be adojited instead of Heterodontus Blainville, preoccupied in Herpe- 

 tologj as Heterodon. Both words are from erspo5, 66a)v {odovi), and are correctly 

 written Heterodus or Heterodon, not Heterodontus. Cestracion is an old name of the 

 Hammerheaded shark, from Ksdrpa, a pick-axe, or similar instrument. 



