100 



FISH GALLERY. 



resembles that of the Dipnoids. In fact this Suborder connects 

 the Ganoids with the Plagiostomes. It contains one family only, 

 represented in the living fauna by two genera — Chimcera and 

 Callorhynchus. Of the former three species are known — Ch. mon- 

 strosa, from the coasts of Europe and Japan and the Cape of Good 



Fiff. 90. 



Egg of a Dog-fish (Scyllium). (From Magellan Straits.) 



Hope ; Ch. colliei, from the west coast of North America ; and 

 Ch. affinis, from the coast of Portugal. Callorhynchus antarcticus 

 is common in the southern temperate zone, and differs from the 

 preceding by the curious shape of the snout, which bears a 

 cartilaginous prominence terminating in a cutaneous flap. 



Plagiostomata, or Sharks and Rays. 



These have from five to seven gill-openings and the teeth are 

 numerous. They differ greatly among each other with regard to 





