FROG-FISHES. 171 



farthest part of the chamber, and on one occasion 

 found it depositing the ova." 



We have already (see p. 24) mentioned the 

 Phycis (^uxtj) of Aristotle, a Mediterranean 

 species of this Family, as exhibiting a parallelism 

 of instinct to the above, forming a nest of sea- 

 weeds, in which the spawn is deposited, and the 

 young are tended by the parent fishes. 



Family XV. Lophiad^. 



{Frog-fishes.) 



So exclusively are fishes in general inhabitants 

 of the water, that it excites our surprise and 

 admiration to see any species emerging from that 

 element, and voluntarily taking to the earth or 

 to the air. Among the Mammalia, there is one 

 extensive Order, which is aerial, that of the Bats ; 

 and one which is exclusively aquatic, that of the 

 Whales and Dolphins ; while there are some mem- 

 bers of the other Orders, which, in a less degree, 

 emidate the habits of these respectively, as the 

 volant Lemurs, Squirrels, and Petauri, on the 

 one hand, and on the other the aquatic Shrews, 

 the Otters, the Seals, and the Manatees. So 

 among Birds, the terrestrial Ostriches, and allied 

 forms, and the swimming and diving Penguins, 

 are well-known deviations from the characteristic 

 habits of their Class, and representatives of beasts 

 and fishes. Reptiles again exhibit almost as 

 many aquatic as terrestrial types ; and not a few 

 are arboreal, if not aerial, such as the Iguanas, 

 the Anoles, the Dragons, the Chameleons, the 

 Tree -snakes, and the Tree-frogs. But among 



