DEEP-SEA FISHES 57 



The cases should be examined in the order in which they are arranged; 

 and one may pass in review the catfishes, carps, eels, trout, salmon, 

 pike, mullets, mackerel, basses, wrasses, drumfishes, Bculpins, cods, flat- 

 fishes and anglers. 



The end case exhibits the grotesque fishes from deep water, in which 

 they occur to the surprising depth of over 3,000 fathoms, or more than 

 Deep-Sea 3# miles. They are usually soft iii substance, with huge 

 Fishes heads and dwarfish bodies, and are often provided with 



illuminating organs like little electric bulbs, which can be "shunted" oft 

 or on by the fish, and enable I In- fi>hcs either to see their neighbors or to 

 attract their prey. A group representing a number of these fishes as 

 they are supposed to appear in the gloom of the profound depths, lit up 

 only by their luminous organs, is shown in an enclosure next to the 

 Paddlefish Group mentioned above. 



Before the visitor has completed his view of the hall, he should 

 examine the two wall cases, on either side of the doorway, which explain 

 the characteristic structures of fishes of different groups, and the way 

 in which the groups are related to one another. In one of these wall 

 cases various kinds of fishes have been arranged in a genealogical tree, 

 and the lines and labels give an idea of their evolution. 



Above the cases hangs a reproduction of the Giant Ray or " devil- 

 fish" over sixteen feet across, taken by Mr. Coles, with whom Colonel 

 Roosevelt made the expedition described in Scribner's for October, 1917. 

 Return to the Elevators. 



CHIMERA, A DEEP SEA " SILVER SHARK " 



