TABLE OF CONTENTS. 



Names of genera and spei ies. 



hi RODOCTION 



Table of Contents 



List <>f the New Genera and Spei a s with Etymologies 



List of Plates 



Marsipohranchh. 

 Hypkrotreta: 

 Myxinida- — 



M\ xiue, L. — 



M. glutiuosa, L 



australis. Jenyns 



IIypi roartia: 



Petromyzontidse — 



Petroiuyzon. Artedi — 



P. marimis, L 



, Bathymyzon, Gill — 



B. Bairdii, Gill 



ELASMllIIRANCHII. 



Tectospondtlj: 



Scymnorhinidse — 



Scymnorhinns, Cuv. — 



S. lichia, Bonn 



Somnioaus, Le S. — 



S. microcephalns, (Sclm.) 



rostratus, (Risso) 



Echinorhinus, Bl. — 



E. spinosus, Gm 



Etmopteridse — 



Etmopterus, Raf. — 



E. spinas, L 



pusillus, (Lowe) 



granulosus, Gtbr 



l'aracentroscyllium, Ale. — 



P. ornatum, Ale 



Centrosevlliuru, M. «.V H. — 



C. Fabricii, (Rhdt.) 



granulatum, Gthr 



Scymnodon, B. & C. — 



S. ringens, B. & C 



Centrophorns, M. & H. — 



C . uyatus, ( Raf. ) 



lusitanicus, B. & C 



crepidater, B. & C 



squamosus. ( ime] 



Dumerilii, (Johnsou) 



calcens, Lowe 



squamulosns, Gthr 



foliaeeus, Gthr 



Ceutroscymnus, B. & C. — 



C. ccelolepis, B. & C 



ohseurus, V 



Ozynotos, Raf. — 



O. centrina, (L.) 



ASTRROSPONDTLI : 

 Scylliorhiuida' — 



Si vlliorhiiius, Bl. — 



S. rotifer, Garman , 



profundorum, a. & U 



hispidus. Ale 



i-aneBcens, Gthr 



Qaleida — 



■Mustelus — 



M. liinnulus. Bl 



Pseudotriacis, Capello — 



1'. microdon, Capello 



Pristiniiis. Bon. — 



P. melastomns, (Raf.) 



atlanticus, V 



Plate and figure. 



Page. 



I. 1 

 [,2 



1 1 1 . x 



III. ii 



V, 18 

 II..". 



N,7 



IV, 12 

 111. 11 



I\ . 13 



VI, 21 



IV, 1 1. 15 

 V. HI 



V. 17 



III. in 

 \ 1,20 



/C50Z 



in 



IX 



XXXI 



I* 



10 



10 

 10 



r,U7 



11 

 11 



11 



12 

 12 

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 13 



13 

 14 



508 

 508 



14, 508 

 15 



16.5(18 



17 



508 



.mis 



18,508 



