TABLE OF CONTENTS. 



Names of genera and species. 



introduction 



Table of Contents 



List of tiif. New Genera and Species with Etymologiei 



List of Plates 



Marsipobranchu. 

 Hyperotreta : 

 Myxinidte — 



Myxine, L. — 



M. glutinosa, L 



austral is, Jen jus 



Htperoartia: 



Petromyzontida — 



Petrornyzou, Artedi — 



P. marinas, L 



Batbymyzon, Gill — 



B. Bairdii, Gill 



Elasmobraxchii. 



Iectospondtli : 



Scyninorhinida; — 



Scymnorbinus, Cnv. — 



S. liehia, Bonn . ; 



Soniniosus, Le S. — 



S. microcepbalus, (Scbn.) 



rostratus, (Kisso) 



Echinorhinus, Bl. — 



E. spinosus, Gm 



Etmopteridas — 



Etuiopterus, Raf. — 



E. spinas, L 



pusillns, (Lone) 



granulosus, Gtbr 



Paracentroscy Ilium, Ale. — 



P. ornatum, Ale 



Ccntroscyllium, M. & H. — 



C. Fabricii, (Rbdt.) 



gran u latum, Gtbr 



Scymnodon, B. & C. — 



S. ringens, B. & C 



Centropborus, M. & H. — 



C. uyatus, (Raf.) 



lusitanicns. li. & C 



crepidater, B.&C 



squamosus, Ginel 



Dumerilii, (Johnson) 



calceus, Lowe 



squamulosus. Gtbr 



foliaceus, Gtbr 



Ceutroscj imius. B. & C. — 



C. cadolepis, B. & 



obscurus, V 



Oxynotus, Raf. — 



O. centrina, (L.) 



AfiTEROSPONDTLI : 

 Scylliorhinidie — 



Scylliorbiuus, Bl. — 



S. retifer, Garman 



prolundonim, G. & B 



hispidus. Ale 



canescens, Gthr 



Galeida; — 



Mustelus — 



M. binnulus, Bl 



Pseudotriacis, Capello — 



P. niicrodou, Capello 



Pristiurus, Bon. — 



P. melastomus, (Raf.) 



atlauticus, V r 



Plate and figure. 



1,1 

 I, 2 



111,8 



111,9 



V, 18 

 11,5 



11.7 



IV, 12 

 111,11 



IV, 13 



VI, 21 



IV, 14, 15 

 V, 16 



V. 17 



111,10 

 VI, 20 



Page. 



Ill 



IX 



XXXI 



I* 



10 



10 

 10 



507 



11 

 11 



11 



12 

 12 

 13 

 13 

 13 

 14 

 508 

 508 



14, 508 

 15 



15 



16, 508 



17 



508 



508 



18, 508 



20, 508 

 21 



III 



