90 CLASSIFICATION OF THE ANIMAL KINGDOM. 



ORDEK V. ELASMOBRANCHII (CHONDROPTERYGII). 

 Sub-ord. 1. Holocephali. 



Fam. Chimseridse. Ch^cera^Callorhynchus. 



Sub-ord. 2. Plagiostomi. 

 Section A. Selachoidei. 



Fam. a. Carchariidse. Carcharias (Shark), Galeus 



^ (Tope). 



Fam. b. Lamnidee. Lamna (Porbeagle), Carcharodon, 

 Selache (Basking Shark). 



Fam. c. Rhinodontidse, RJiinodon. 



Fam. d. Notidanidae. -Notjdanus. . 



Fam. e. Scylliidae. ^Scyllium (Dog-fish). 



Fam. / Spinacidae. Spinqx, Acanthias (Piked Dog- 

 fish). 



Fam. g. Rhinidse. Rhina (Monk-fish). 



Fam. li. Pristiophoridsa. Pristiophorus. . 



Section B. Cestraphori. 



Fam. a. Cestraciontidse. Cestracion (Port- Jackson 



Shark), *Acrodus. 

 Fam. Z>. *Hybodontid83. Hybodus. 



Section C. Batoidei. 



Fam. a. Pristidse. Pristis (Saw-fish). 



Fam. b. Rhinobatidae. Rhinobatis. 



Fam. c. Torpedinidse. Torpedo (Electric Ray). 



Fam. d. Raiidse. Raid (Skate). 



Fam. e. Trygonidae. Trygon (Sting-Ray). 



Fam. /. Myliobatidse. Myliobatis (Eagle-Ray). 



( J. Miiller and Henle, Systematische Beschreibung der Plagiostomen, Ber- 

 lin, 1841 ; F. M. Balfour, Monograph on the Development of the Elasmo- 

 branch Fishes, 1878 ; Giinther, An Introduction to the Study of Fishes, 

 1880.) 



