342 REPORT OF NATIONAL MUSEUM, 1892. 



Most of the Syngnathidae inhabit marine waters, but some of them 

 range into estuaries, and a few are found in fresh waters. 



As a rule the Soleidae are marine fishes, but representatives of the 

 family are known in South American and other fresh waters. 



The Pleuronectidae are also typically marine, but some species range 

 into estuaries, and some of these range into adjacent fresh waters. 



The Brotulidae are mainly marine, many being found in abyssal 

 depths j but two blind species, representing two genera, are found in the 

 fresh waters of Cuban caves. 



TheGradidae, with the known exception of only one species, are marine 

 fishes. This species is common to Europe and North America and is 

 confined to fresh waters. 



One species of the Blenniuke in Europe inhabits fresh waters. Most 

 of the known representatives of the family are marine, but some, espe- 

 cially in Australia, range into estuaries and fresh water. 



Three South American species of the Batrachidae range from marine 

 and brackish into fresh waters. Almost all other known members of the 

 family are denizens of marine waters. 



The greater part of the Gobiidae inhabit marine waters exclusively, 

 but several species range into estuaries and "adjacent fresh waters. 

 Some species are confined to fresh waters. 



A majority of the Cottidae arc routined to marine waters, but certain 

 genera are of exclusively fresh- water habitat. 



The Cichlidae are a typically fresh-water family, but one genus usu- 

 ally referred to it is found in marine and estuarine waters. 



The Embiotocidse are mostly marine, but one genus is confined to 

 fresh waters. 



Most of the Gerrid;e are of exclusively marine habitat, but some 

 species range into estuaries and some even into adjacent fresh waters. 



The Polynemidae are typically marine, but some species range into 

 est uaries. 



The Sciaenidae are mainly of estuarine habitat; some range into fresh 

 waters, and oue North American genus is confined to fresh waters. 



The Pristipomatida' are mostly marine fishes, but certain Australian 

 forms are known to range into brackish and fresh waters. 



The Serranida' are also mostly marine fishes, but some species occur 

 in brackish waters, and a few North American forms live almost exclu- 

 sively in fresh waters. 



The Percidae are a fresh-water family, but some species range down 

 into mildly brackish waters. 



Most of the Centropomidae are denizens of marine waters, but some 

 species find a congenial habitat in estuarine, and even in adjacent fresh 

 waters. 



The Atherinidae arc mainly marine, but some range into fresh waters, 

 and one genus is confined to fresh waters. 



The Mugilidae arc mostly of marine habitat, but some range into estu- 

 aries, and several species are confined to fresh water. 



