TYPES OF FISHES. 
27 
teristic types of fishes, sucli as the Pike, Cod, Turbot, Dog-fish, 
and Skate, with the names of the various fins affixed. A striking 
specimen is the skeleton — mainly cartilaginous — of the Great 
Bhie Shark [Carcliarodon rondcletii), fig. 9, which occupies the 
greater portion of this case. It should be noted that the jaws 
■do not correspond with those of the higher Vertebrates ; and 
Fig. 10. — Flying INIackerel (Exoccetus volitaii<). 
Fig. 11. — Flying Gtjr-saud (Dactyloijteru^ volitans). 
(From " The Study of Fishes." ) 
particular attention should be devoted to the structure and 
irrangement of the arches supporting the gills. 
In the left side of the table-case in this bay are sho^vn a 
number of dissections, mounted in spirit, displaying the 
different types of skeletal structure presented by the fins in 
various groups of fishes. One of the most remarkable of these 
types occurs in Ceratodus forsteri, the Queensland Lung-fish, in 
which the skeleton of the fin consists of a median jointed axis, 
